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COMPUTER HARDWARE INFORMATION SYSTEMMANAGBMENT:

A CASE STI]DY OF YONOK COLLEGE

THANOM I(ANTIPAIYYACHAREONz-

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A THESIS SUBNIITTED IN PARIIAL TUTILIT{ENT OF THE

REQT]IREMENT FORTHE DEGREE OF MASTER OF SCIENCE

(IECHNOLOGY OF INTORMATION SYSTEM MANAGEMENT)

EACTIIjTY OF GRADUTE STT]DIES

MAHIDOL I]NTVERSITY

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Copyright by Mahidol University

Thesis

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COMPUTER HARDWARE II\FORMATION SYSTEMMANAGEMENT:

A CASE STTJDY OF YONOK COLLEGE

Candidate

S"t,"""rf $l *hJ^lF,Lect. Suttinant Nantachit, M.S.IMajor-Advisor

LLect. Thanakorn Uan-on, D.Engr.Co-Advisor

LProf Liangchai Limlomwongsg Ph.DDeanFaculty of Graduate Studies

Lect. Thanakorn Uan-o4 D.Engr.ChairMaster of Science Programme inTechnology of Information SystemIManagement

Faculty ofEngineering


,,Thesis

entitled

COMPUTER HARDWARE INFORMATION SYSTEMMANAGEMENT:

A CASE STTJDY OF YONOK COLLEGE

was submitted to the Faculty of Graduate Studies, Mahidol University

for the degree of Master of Science (technology of lnformation System Management)

onMay 24, 2002

9/4i*Jr u^uL\r:Lect. Suttinant Nantachit, M.S.Chair

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Lect. Thanakorn Uan-on, D.Engr.

Member

E*" k.t*ditAsst.Profl Kasem Kulpradiq M.Sc.Member

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Profl Liangchai Limlomwongse, Ph.DDeanFaculty of Graduate Studies

IMahidol University

Lect. Thanakorn LJan-on, D.Engr.DeanFaculty ofEngineeringMatridol University


ACKNOWLEDGEMENT

I wish to extend my sincere thanls to Lect. Suttinant Natachait my

major advisor and Dr. Thanakorn Uan-on my co-advisors for their guidance and

revision of thesis proposal. My success in this completing this study became a

reality with kind supervision of my advisor.

Special thanks to Lect. Atichart Harnchamchai and Lect. Sumana

Suwanwilai for their guidance.

I would like to thank Nk. Nimit Pootkajurg who have friendly gvine

discussion and important suggestions to my thesis and IT officer's of Mahidol

University for all their advice and support.

pinally, I wish to express my deepest thanks my parents for their love,

patience uoderstanding and support during the period of my study.

Thanom Kanitpanyachmeon


Fac, ofGrad. Studies, Mahidol Univ. Thesis / iv

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4037636 EGTIA{ : IvIAIOR: TECHNOLOGY OF INFORI\{ATION

KEY WORDS

SYSTEM MANAGEMENT; M.Sc. (TECHNOLOGY OFINFORMATION SYS]EM MANAGEMENT)

: SYSTEM AI{ALYSIS / SYSTEM DESIGN /INFORMATION SYS]EM / DATABASE

THANOM KANITPANYACHAREON: COMPI.ITER HARDWAREINFORIVIATION SYSTEM MANAGEMENT: A CASE STI.JDY OF YONOKCOLLEGE. TIIESIS ADVISORS: SUTIINAI.IT NAI{TACIIIT, M.S.,THANAKORN UAN-ON, D.Engr. I 12 p. ISBN 97 4-04-1895 -3

This research was undertaken for the purpose of creating a database and an

application of computer hardware information system management, which reduces

access time, increases accuracy and maintains consistent data- The case study was

canied out at Yonok college. The information system was designed and developed

using data flow analysis, relational database Mcrosoft Access 97). The

application was created using Microsoft Visual Basic 6.0 and a report was created

using Crystd Report 8.0.

The information system consists of tbree major processes: 1) Data

manipulation: Manipulating relative d, a;2) Transaction processing: Supporting

operation management, i.c. receiving, maintenance and repair; 3) Queries and

Reports processing pre-defined outputs and preplanned printed reports. Users are

divided into 3 levels: database adminisfoators, operators and general use6.

In testing the system, it was seen that the information system can enable

the user to work more conveniently, fhster and more accurately, and it solves the

prohlem of inefficiency in computer hardware management.


Fac. of Grad. Studies, Mahidol Univ. Thesis / v

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CONTENTS

ACKNOWLEDGEMENTS

ABSTRACT (ENGLTSH)

ABSTRACT (rHAr)

LIST OF TABLES

LIST OF FIGI]RES

CHAPTER I INTRODUCTION

Statement ofproblem

Jtstification

Objective

Scope of work

Expected result

CHAPTER TI LITERATI]RE REVIEW

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Material Management and Inventory Control

Management lnformation systems

Database

Data Flow Analysis

Visual Basic

ADO (ActiveX Data Object)

Seagate Crystal Report

Testing Copyright by Mahidol University

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CONTENTS (Continued)

Related Research

CIIAPTERM MATERIALS AI\D METEODS

Methods

Materials

CHAPTER TV RESI]LTS

Current System

Results from System Analysis and Design

Computer Hardware information System Management

for Yonok College

CHAPTER V DISCUSSION

CHAPTER VI CONCLUSION

REFERENCES

APPENDIX A

APPENDIX B

APPEI\DD( C

APPENDD( I)

APPENDIX E

BIOGRAPITY

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LIST OF TABLES

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Table

Computer

Hardware

IIW_T1pe

HW_Detail

Size

Speed

Brand

Model '

Vendera

Deparhent

Section

Room

Employee

UserRight

ReceiveMaster

ReceiveDetail

Repair

Maintenance

MaintenanceSign

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564. I Ancestor window objectsCopyright by Mahidol University

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LIST OF TABLES (Continued)

Table 4.2 Capability of process

Table 4.3 Privilege of users

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I LIST OF FIGI]RES

Figure 2.1 The tbree levels of management

Figure 2.2 MIS subsystems

Figure 2.3 Data, Flow Diagram using Yourdon notation

Figure 2.4 ADO objectmodel

Figure 2.5 Object in ADO

Figure 4.1 Crraphic presentation of current receiving process

Figure 4.2 GrEihtc presentation of maintenance process

Figure 4.3 Graphic presentation of repair process

Figure 4.4 Context dia,ganr of computer hardware information

system management

Figrre 4.5 DFD Level l: Computer hardware information

system management

Figrne 4.6 DFD Level 2: lDatamanipulation

Figure 4.7 DFD Level3: Datamanipulation

Figure 4.8 DFD Level 2: 2 Transaction process

Figure 4.9 DFD Level 3:2.1Receive hardware

Figure 4.10 DFD Level 3:2.2 Maintenance hardware

Figure 4.1I DFD Level 3:2.3 Repair hardware

Figrne 4.12 DFD Level 3:Z. Receive repair hardware

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LIST OF FIGURES (Continued)

Figue 4.13 DFD Level 2: 3 Query process

Figure 4.14 DFD Level2: 4 Report generation

Figrre 4.15 First level process description

Figue 4.16 Third level process description

Figure 4.17 Third level process description (continue)

Figure 4.18 Third level process description (continue)

Figure 4.19 Logic summary of procedure

Figure .z0Dabdictionary entries of data flows

Figrne .ZlDatadictionary enties of data flows (continue)

Figure 4.zzDatadictionary entries of data flows (continue)

Figure 4.23 Data sEucture diagram

Figure 4.24 Strucnre chart

Figure B.l Departuent

Figure B.2 Section

Figure B.3 Employee

Figure B.4 Vender

Figrre B.5 Computer

Figure 8.6 Hardware

Figure B.7 HW_Type

Figure B.8 Change password

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LIST OF F'IGURES (Continued)

Figrre B.9 Receive new hardware

Figure B. I 0 Maintenance

Figrue B.1l Repair

Figure 8.12 Manage hardware

Figure B.l3 Manage computer

Figue B.l4 Manage user

Figrre B.l5 Search hardware

Figure 8.16 Select building

Figure B.l7 Select hardware status

Figure B.18 Login

Figure B.19 Preview

Figure E.l Organization chart of Yonok College

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Fac. Of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of Inforn. Sys. Manag.) / 1

CHAPTERI

INTRODUCTION

1.1 Statement of problem

Yonok College is private college which received the firnd from USAGE and

Baylor University. We try to allocate this fund effectively, to buy the good machine

and material to serve the studen! faculty member, staffand social, we also allocate the

studying and teaching, we use the computer in the services. We establish Information

Technology Center for supporting every deparhents in the college in the way of

supply and maintenance the computer.

Since of the grourth of organization and the development of technology,

computer are taking more action in the field of teaching and studyrng, so the computer

are not enough for using of students, faculty member, staff and executive level. Then

the college is increasing the budget for buying the computer.

Another function of information technology center is collected the college

information of computer accessories and maintenance all of them. There axe many

computers which are needed the maintenance because of their dsslining. In the past

the information technology center objective is to serve every departrnent in case of

emergency and the staffof this center also have the teaching load so the development

of hardware information system is the last thing which we do.

Now each departuent have a lot of processes of purchasing,

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Thanom Kanitpanyachareon lnfroduction / 2

maintaining and reporting of computer. Same time they also have the

duplication of working, so it make the work late, error and uncomfortable for the later

searching.

1.2 Justifrcation

Computer Hardware Information System Management offers potential to solve

many of the problems faced by the infomration technology. It takes these promises:

l. Reduced mistake and wasting time to searching computer hardware information"

maintenance data. 2. Improved data manipulation capabilrty by using relational

database. 3. Feasibilrty to use, because the Computer Hardware Information System

Management could !s implemented on existed Yonok College's resources.

13 Objective

To design and create database of Computer Hardware Information System

Management for case study of Yonok College

To develop Application of Inventory and Management system

1.4 Scope of work

Computer hardware included computer and computer equipment.

Create database using Microsoft Access 97.

Create application program using Visual Basic 6.0, which has functions

follows:

- Inventory

- Hardware receiving

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Fac. Of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of Inform. Sys. Manag.) / 3

- Management

' - Hardware maintenance

- Hardware repair

Develop applicationprogram using features of craphic User Interface (GUr)

Test the system using sample data from departnents of Yonok College

1.5 Expected result

1.5.1 The marn output of this research is Computer Hardware Information

System which will be more effectiveness and be able to support user and center

infomration technolo gy staff.

1.5.2 Users are able to use and maintain the system easily.

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Thanom Kanitpanyachareon Literature Review / 4

CHAPTER II

LITERATT]RE REYIEW

In this chapter, *Material', 'oComputer" and *Computer Equipmenf, are the

same meaning

2.1 Material Management and Inventory Conhol

Material management is a coordinate firnction responsible for planning and

contolling materials flow. Its objectives are as foltows(4):

o Manimize the use ofthe firm's resources.

o Provide the required level of customer service.

Irwentory managemenr is responsible for planning and contolling inventory

from the raw material stage to the customer. Inventory must be considered at each of

the planning levels and is thus part of production planning, master production

scheduling, and material requirements planning({').

The term Inventory can be used to mean several different things, zuch as (5);

l. The stock on hand of materials at a given time (a tangible asset which can

be seen, measured and counted);

2. An itemized list of all physical assets;

3. (as a verb) to determine the quantity of items on hand;

4. (for financial and accounting records) the value of the stock of goods

owned by an organization at particular time.Copyright by Mahidol University

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Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of Inform. Sys. Manag.) / 5

Material Management Functions and Responsibility

l. Procwement and Purchasing

Purchasing is the 'oprocess of buying", purchasing is solely the

responsibility ofthe purchasing departrrent. Obtaining the right material, in the

right resource, and at the right price are all purchasing firnctions (4).

2. Receiving

Responsibilities of material receiving are checking quantity and quality

of receipt material, which justifr; pruchasing order, storage area selection and

providing tools and people for transfer. The main firnctions are (8).

After Materials have been received, receiving report will generate. The

report has an important supplier data for example, tansport date, decayed

materials, percentage of refumed materials, and so on. In addition, this report is

useful for summarizing purchase order and negotiating of supply agreement in

future (9,10).

3. Supervision and protection

This section has to plan appropriate stor4ge location and method,

provide security, protect materials from damage and lost. These tasks are

convenient for easy and quick material identification (8).

Closed stores system stores materials in closed or conholled area,

which does not allow anyone to go into there except officer. Materials are

distibuted and kept when there are requisition or receip report. The objective

of this system is best material safety. It has strict accounting control,

furthermore receiving record and inventory identification are important

activities (9,10). Copyright by Mahidol University

Thanom Kanipanyachareon Literature Review / 6

4. Distibution

Main responsibilities of distibution are authorization verification;

disEibuting materials follow requisition, checking characteristic of distibuted

materials (8).

5. Inventory control

It sets inventory contol system, which suits for each 6pe of materials

and contols material quantity (8).

since recording and keeping are separated, sometimes the quantity of

on hand material may not equal to the quantity of material balance on report.

So, it should check the quantity of material in period which has 3 methods as

follows; Fixed Annual Inventory, continuous Inventory and Low-point

lnventory (9,10).

6. Record and report

It has to record of receipq distribution, contol and quantity on hand of

materials, update data, collect purchasing data and statistical data, create report

such as receipt report, annual reports and stock checking (8).

7. Unused Disposal

This section has to find rmused materials, report list of unused materials

of every section, distinguish rmused materials from stock and propose

effective unused disposal method (8).

8. Transportation

Transportation has to prepaxe and pack materials, identiff

tansportation method and send them to destination on time. The destination

must get good material in the right quantity (8).

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9. Cooperation to other deparhents (8).

2.2 i0f,arorge:ment Infoluation Systems

Management positions in a firm are often broken into tbree level: upper

management (the president and vice-presidents), middle management (the people

responsible for anything between upper and lower management), ffid lower

management (the people directly responsible for managing those who produce the

firm's outputs). The roles of these levels of management are summarized in the

pyramid in Figure 2.1

$pporllnglnformdlon

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trt[ddlEi,lanagsment

lowerll,lhnagement

Figure 2.1 The tlree levels of management

Management information system (MIS) is any system that provides people

with either data or information relating to an organization's operation. The systems

provide routine informationto managers and decision-maker. The focus of a MIS is on

operation efficiency (1,2).

The MIS effort in an organization arr composed of the following four

subsystems. (See Figure 2.2) Knowledge-based systems such as artfficial intelligence

(AI) and expert systems @S) are also information system, but are not depicted as

Srdeglcmanagement

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separated as subsystems because they may be used in conjtrnction with a'[?S, MRS,

DSS and OIS.

- Transaction processing systems (TPS) comprise the routine, day-to-day

accounting operations that have been an important part of most firms'

computer processing Transaction processing cycle consists of five major

segments: data entry, tansaction processing, file/database updating,

report/document getreratio& and inquiry/respome processing.

Figure 2.2 MIS subsystems

Management reporting syste,m (l\[RS) generates the preplanned printed

reports for decision-making purposes. MRS are used for both management

planning and management confrol firnctions. Properties of management

reporting systems:

- Support stucture and semi-structured decisions, primarily at the middle

and lower-management levels.

- Provide fixed tlpes of infomration, in an established format; the

information requirements of users are normally known and stable



- Often implemented with voluminous, hardcopy reports, requfuing each

user to search specifically for key information.

- Usually require a formal request to be submiued; formal systems

development may be required to approve

- Often require a formal run schedule

- Usually consist of internal operational datq rather than data about the

extemal environment

- Usually more concerned with data about the part than relating to the

future

- Often oriented to summary and exception reporting

- Decision support systems (DSS) provide a set of easy-to-use modeling,

retieving and reporting capabilities so that. people can generate the

informationthey feel will be useful to them when making decisions.

- Office information systems (OIS) include the use of such computer-based"

office-oriented technologies as word processing, desktop publishing,

electronic-mail, video teleconferencing, and so on (l).

Form these definitions, The Computer Hardware Information System combines

between TPS and MRS.

2.3 Database

2.3.1 Concept of Database

A database is an integrated collection of data stored in different tlpes of

records, and in a way that makes them accessible for multiple applications. The

interrelation of the records derives from the relationships in the data, not from theirCopyright by Mahidol University


physical storage location. Records for different entities are tJpically stored in a

database(whereas files store records for a 5ingle entity). In a university database, for

example, records for shrdents, courses, and faculty are interrelated in the same

database. The sEucture of the relationships in most database fotlow one of three

logical database models: Hierarchical, networh and relational. Hierarchical and

network models are still being used today, but relational models are the most popular.

A brief outline of database models follow:

Hierarchical or Tree Model:

A Hierarchical model is organized in top-down or inverted fieeJike structure.

An organization charq for example, shows the layers of executives, middle managers,

and operating personnel. The hierarchical model is shown with the highest level of fiee

known as the root. The nodes of the tree represent entities. A hierarchical model

permits two tlpe of relationship:

o One-to-one: An entity at one level is related to one entity at the next

level.

r One-to-many: An entity at one level is related to zero, one, or more

entities at the next level.

The design of ahierarchical database will affect the accessibihty of the data. In

the store example, Items are always related to an order. In additioq orden are always

related to a specific customer.

It is very efficient to have the orders for certain customer or the items in a

particular order. Anomalous (undesirable) side effects occur under certain database

designs. Hierarchical database involve anomalous with respect to the following:


Fac. of Grad. Studies, Matridol Univ. M.Sc. (Tech. of Inform. Sys. Manag.) / 11

Insert ofrecords: A dependent record cannot be added to the database

without a parent. For example, Items cannot be added without their

inclusion in an order.

Delete of record: Deleting a parent from the database also deletes alt its

descendants. For example, deleting a customer also deletes outstanding

orders.

NetworkModel:

A network model is similar to the hierarchical model, except that an entity can

have more than one parent. In the college example, a relationship can be shown

between instructors and students. This capability intoduces the use of an additional

tlpe of relationship in the data:

o Many-to-nrany: An entity can be related to 7*ro, one, or more than one

entity at another level.

In network database, as in hierarchical database, the relations between entities

must be stablished at the time the data model is established and the database created.

The systems analyst must conform to these details when developing applications that

enter or retrieve dana during processing.

The hierarchical and network database are conceptually simple and appear

uncomplicated when fust examined. In a large database environment, however, they

can rapidly evolve into a complicated web of intenelationships that are difficult to

manage as the database evolve with use.

Relational Model:

The relational data model, developed in 1970 by E.F. Codd, is based on a

relation, a two-dimensional table. Row in the table represent the records; and columnsCopyright by Mahidol University


show the attributes of the entity Relational databases use on a model to show how data

in a record me logical related.

The order of the data in the table is not sienificant and no order is implied

when records are included in the relation. Similarly, the physical details of storage are

not of concern to the analyst. Relational tables show logical, not physical,

relationships.

When a request for information is made, the system produces a table

containing the information. In the laundry exanrple, if a manager wishes to deterrrine

who uses napkins, the system will produce a table containing the names of all users of

napkins.

The relational database model is by far the most widely used. It is easier to

contol, more flexible, and more infuitive than the others because it organizes data in

table. The ability to link relational tables also allows user to relate data in new ways

without having to redefine complex relationships. Because of its many advantage,

many companies use the relational model for large corporate databases, such as

marketing and accounting. The relational model can be used with personal computers

and mainframe systems.

2.3.2 Normalization

Normalization is a process of simpliffing the relationship between data

elements in a record. Through Normalization a collection of data in a record structure

is replaced by successive record stnrctures that are simpler and more predictable and

therefore more manageable. Normalization is carried out for four reasons:


Fac. of Gmd. Studies, Mahidol Univ. M.Sc. (Tech. of Inform. Sys. Manag.) / 13

o To structure the data so that any pertinent relationship between entities

can h represented

o To permit simple retieval of daa in response to query and report

requests

To simpliS the maintenance of the data tbrough updates, insertions,

and deletions

o To reduce the need to restructure or reorganizs data when new

application requirements arise

The steps in nomalization

First Normal Form (lNF): A relation is in I NF if the values in the relation

are atomic for every atfribute in the relation. By this we mean, simply, that no athibute

value can be a set of values or, as it is some times expressed a oorepeating

soupo'.

Second Nonnal Form (2NF): A relation is in 2 NF if no nonkey attribute is

in firnctionally dependent on just a part of the key. The process of decomposing the

non-2NF relation into 2NF relations follows a few simple steps: 1) Create a new

relation by using the attibutes from the offending FD as the attributes in the new

relation. The determinant of the FD becomes the key of the new relation. 2) The

attibute on the right side of the FD is the eliminated from the original retation. 3) If

more than one FD prevents the relation fuom2NF, repeat steps I and2 for each FD.

Third Normal Form (3NF): A relation is in 3 NF if for every functional

dependency (FD): x -> Y, X is a key. The 3NF is often called Boydd codd Nomral

Form (BCI.IF)


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Fourth Normal Fom (aN$: A relation is in 4 NF if it is 3NF and has no

multivalued dependencies (MVD). Since the problem of multivalued independencies

arises from multivaled attributes, we can reach a solution by placing all multivalued

attributes in relations by themselves, together with the key to which the attibute

values apply.

Fifth Normal Form (5N$: Functional dependency and multivalued

dependency constaint result in the need for Second, Third, and Fourttr Normal Form.

The 5NF eliminates anomalies that result from a special type of consraint calted join

dependencies.

2,3.3 Relational model terms (3)

Key A minimal set of atnibutes that uniquely identifies

each row in a relation.

A singls column or the combination of multiple

columns that uniquely identifies the row in the table.

A single column or multiple column that relate to the

primary key in another table.

It is used to store data. It is organized in a row (tuple)

and /column (attributQ manner that data can be

manipulated by DBMS.

A rule that resfiicts the values in a database.

Atomic value

The value of an atffibute in a tuple determines the

Primary key

Foreign key

Table (relation)

Constraint

Atomic value

Functiona


Fac. of Grad Studies, Mahidol Univ.

dependency (FD)

Determinant

Multivalued

dependencies

MVD)

M.Sc. (Tech. of Inform. Sys. Manag.)/ 15

value of another athibute in the tuple.

The attribute(s) on the left side of a fimctionat

dependency; determine(s) the value of other aftributes

. in the tuple.

A constraint that guarantees the independence of multi

valued attributes.

2.3.4 The database management system (DBMS)

The database management system is a program for bridging the file structures

that store the data and the data stuctures that represent the daa needs of users. DBMS

consist of group of programs that can be used as an interface between a database and

the user or the database and application programs. Typically, this software acts as a

buffer between the application progruns and the database itself (2).

2.4l)ata FIow Analysis

Data flow analysis examines the use of data to carry out specific business

processes within the scope of a systems investigation. The components of data flow

stategy span both requirements and design. A prescribed notation facilitates the

documentation of the current system and its analysis by all participants in the process

of detemrining system requirement.


i

Thanom Kanitpanyachareon Literature Review / tl6

Tools of Data Flow Strategy.

l. DataFlowDiagram.

The graphic tool used to describe and analyze the movement of data

through a system - manual or automated - including the processes, stores of

data, and delays in the system.

2. Data Dictionary

The logical characteristics of current systems data stores, including

tlame, description, aliases and organization. Identifies processes where the data

used and where immediate access to information is needed. Serves as the basic

for identiffing database requirements during system design.

3. Data Stucture Diagram.

A pictorial description of the relation between entities (people, places,

events and things) in a system and the set of information about the entity. Does

not deal with physical data store.

4. Structure Chart

A design tool that pictorially shows the relation between processing

modules in computer software. Describes the hierarchy of component modules

and the daa that ffs fiansmitt€d between them. Includes analysis of input-to-

output transforrrations and analysis of tansactions.

The first two are developed during requirements determination while the later

two most useful during systems design (6).

,


9

Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of lnform. Sys. Manag.) / 17

Figrrre 2.3 DataFlow Diagram using Youdon notation

2.5 Visual Basic

Visual Basic is a complete set of tools to simpliff rapid application

development. The rrvisualr part refers to the method used to create the graphical user

interface (GUD. Rather than writing numerous lines of code to describe the

appearance and- location of interface elements. The "Basic" part refers to the BASIC

@eginners All-Furpose Slmbolic Instnrction Code) language, a language used by

more prograrnme$ than any other language in the history of computing. Visual Basic

has evolved from the originat BASIC language and now contains several hundred

statements, functions, and keywords, many of which relate direcfly to the Windows

Grrr (rs).

2.6 AI)O (ActiveX Data Object)

ADO is one of data access interfaces in Visual BASIC. The ADO object model

defines a collection of programmable objects that support the Component Object

Model (COM) and OLE Automation to leverage the powerfirl parmer technology

called OLE DB. The OLE DB is a COM-based interface between data providers and

client applications. Data providers can be anything from relation databases to file

system. Microsoft knew it needed to create an easy-to-use object layer on top of OLE

\t}{a Sors


ta


DB, The OLE DB Model shown in Figure xlo(. Thus, ActiveX Data Objects were

bom. The ADO object model - when compared to other data access objects such as

RDO or DAO - is flatter (has fewer objects) and simpler to use. The ADO object

model shown in Figrre 2.4

Figure 2.4 ADO objectmodel

There are seven objects in the ADO object model, as described in the following

list (1s).

Command object Maintains information about a command, such as a query

sting, parameter definitions, ild so on. we can execute a command sfiing on a

Connection object of a query sting as part of opening a Recordset object, without

defining a command object. The command object is useful to define query

parameters or execute a stored procedure that retums output parameters. The

Command object supports a number of properties to describe the tlpe and purpose of

the query and help ADO optimize the operation.

a

OlEtldesoroE RBldlonEfDdabesE


a


Connection obiect Maintains connection information such as cursor qfpe,

connect sfring, query time-ou! connection time-out, and default database.

Eror object Contains extended error information about error conditions

raised by the data provider. Because a single statement can generate two or more

errors, the Errors collection can contain more than one Error object at a time.

X'ield object Contains information about a single column of data within a

recordset. The Recordset object uses the Fields collection to contain all of its Field

objects. This Field information includes datatlpe, precisioq and numeric scale.

Parameter object A single parameter associated with a Command. The

Command object uses the Parameters collection to contain all of its Parameter objects.

ADO Parameter objects can be created automatically by sending queries to the

database. However, we can also build this collection programmatically to improve

performance at run time.

Property object A provider-defined characteristic of an ADO object. ADO

objects have two types of properties: built-in and dynamic. Built-in properties are

those properties implemented in ADO and available to any new ADO object. Dyramic

properties are defined by the underlying data provider and appear in the Properties

collection for the appropriate ADO object. For example, a property may indicate if a

Recoldset object supports tansactions or updating. This is one of the greatest featrues

of ADO, in that it lets the ADO service provider present special interfaces.

Recordset obiect A set of rows returned from a guery, including a cursor into

those rows. We can open a Recordset object (that is, execute a query) without

explicitly opening a Connection object. However, if we do first create a Connection


c

a


objec! We can open multiple Recordset objects on the same connection. Objects in

ADO shoum in Figure 2.5

Grn€dbr

Erq

Roperly

@ffiisfll

Eafl€tat

Fioperty

RecordU

Fleld

Roperty

FioFty

t

Figure 2.5 Objects in ADO

2.7 Seagate Crystal Report

Crystal Reports is designed to work with yotr daabase to help you analyze

and interpret important information. Crystal Reports makes it easy to create simple

reports, and, it also has the comprehensive tools you need to produce complex or

specialize reports.

Crystal Report is designed to produce the report you want from virtually any

data source. Built-in report experts gurde you step by step through buitding reports and

completing conrmon reporting tasks. Formulas, cross-tabs, zubreports, and conditional

forrratting help make sense of data and uncover important relationships that might

othenrrise be hidden. Geographic maps and graphs communicate information visually

when words and numbers are simply not enough (16).Copyright by Mahidol University

a

Fac. ofGrad. Studies, Mahidol Univ. M.Sc. (Tech. of Inforn. Sys. Manag.) / 21

2.8 Testing

Back-box testing attempts to find erors in the following categories:

o incorrect or missing flrnctions

o interface errors

. erron in data strucfures or extemal database access

o performance errors

o initialization and termination erors.

Back-box testing are designed to uncover erors in functional requirements

without regard to the intemal working ofprogam.

Boundary value arulysis (BVA) has been developed as a technique Boundary

value analysis leads to a selection oftest cases that exercise bounding values.

Guidelines for BVA are as following

1. If an input condition specifies a range bounded by value a and b, test cases

should be designed with values a and b, just above and just below a and b

respectively.

2. If an input condition specifies a number of values, test cases should be

developed that exercise the minimum and maximum numbers. Values just

above and below minimrrur and maximum are also tested.

3. Guidelines I and 2 are applied to output conditions. For example, assume

that a temperature vs. pressure table is requited as output from an

engineering analysis program. Test cased should be designed to create and

output report that produces the ma:rimum (and minimum) allowable

number of table entries.



4. If intemal program data structures have prescribed boundaries (e.g., an

array has a defined limit of 100 enties), be certain to design a test case to

exercise the data structure at its boundary (7)

2.9 Related Research

Wijada Rattamanee (l l) analyzed and designed inventory control system of

KMITL, in particular controlling and auditing models. The design was intended to be

easy and speed up the operation procedure. The system was analyzed and designed by

data flow diagram using Gane and Sarson notation. The new systems included

database design, prototype design and report design.

Nathavipa Phasulq Voramon Uronkarn (12) did computer program that was

able to collect equipment datq academic equipment and office equipment in Industial

Engineering Deparhent factory of Engineering Mahidol University. The program was

Windows 3.11 and \Mindows 95 platform. It can be added data, edited data listing and

reported in formal forms.

Wilert Lertbudikul (13) designed and developed medical supply inventory

information system for a large hospital. The research followed these steps; current

system feasibility sdy, system analysis, system design and system development. The

system was designed and developed into 2 types, which were online interactive using

CICS/VS communication contol system and batch using OSA/SI operating system.

The system focrsed on high data quantity, high-speed data searching, collecting and

summarizing 1fos important information for management. The system consisted of 4

subsystems; initial and security subsystem, basic database recording subsystem, daily



transaction zubsystem and query and statistical subsystem. This developed system was

suitable for a large hospital.

Usa Jugnimongkol (14) designed and developed information system for

government inventory management for Land development departuent. The system

reduces access time, increases accuracy and consistent data The information system

was designed using data flow analysis, relational database (Sybase SQL anywhere 5.0

as DBMS) and Object-Oriented programming @owersoft Powerbuilder Enterprise/32

Version 6.0).


!

Thanom Kanitpanyachareon Materials and Methods / 24

CIIAPTER III

MATERIALS AI\D METIIODS

3.l Methods

3.1.1 collect data and identify system requirement of yonok college

. Primary data are collected from observe staffs at selected times to see

how data are handled and what information people need to do theirjobs

and interview center information technology manager. see

questionnaires in Appendix D.

o Secondary data are collected from docnments, reports and database as

following:

- Organization chart (see in Appendix D.)

- The principle for hardware receiving

- Hardware receiving report

- Asset of accounting report

3.1.2 Analysis and design system

Analysis system

- Gathering and clariff system requirement

- Organize data into a meaningful representation of the information

system that exists and of the requirements desired in a replacement r

system. Copyright by Mahidol University


- Modeling the processing elements of an information system and how

data are tansformed in the system.

- Shows the scope ofthe system using context diagram

- use data flow analysis to analyze the system. The components of data

flow sfrategy span both requirement deterrrination and system design.

Following the flow of data tbrough processes tells how data are iopoq

processes, stored, retieved, used, changed and output.

Design system

Design of database

.. _ Identiff data used and information produced

- select and identifr data from collected data and system

: ,.qrrir"rent, it gets related entities, attributes and constraints.

- Identiff relationships between those entities and design database

with relational database concept.

Design of inpsl and output

Design inpuUoutput screerui. These screens are user-friendly

with GIJI (graphic user interface). The input screens must have input

contols, which provides way to ensure that

only authorize usenl can access the system

guarantee the transactions are acceptable

the data are validated for accuracy

there is the determination whether any necessary data have

been omitted.Copyright by Mahidol University

Thanom Kanitpanyachareon Materials and Methods / 26

Design output reports, which support the activity of the

operation and management. The outputs are generated in tubular form.

Deign of procedure

Distinguish between manual and computer processes. The

computer processes axe to identiff constraints such as authorization,

volume, process timing, input method, ouput method and so on.

Design procedure and process specification. Formal statements

using tecbniques and languages that enable analysts to describe

imFortant activities that make up the system.

3.1.3 Develop system

- create database. Transform designed data structure diagram to

database.

- Develop application to connect database and support operations. This

step has unit testing.

3.1.4 Test softrrare

Verifu and validate software.

Check if the software conforms to its specification and if the softruare

meets the expectation of the software requirement by black-box testing.

Uncover errors and ensure that the software performs properly. Test cases are

designed by boundary value analysis method.



3.1.5 Summarize and create document

This document includes detail, methodology, conclusion and

recommendation of the research.

3.2 Materials

3.2.l lfardware:

o Personal Computer

. Intel Pentinm III 1000 MHz

r RAM 128 MB

o Hard disk 40 GB

3.2.2 Softrrare:

o Windows XP

r Microsoft Visual BASIC 6.0

r Crystal Report 8.0

o Microsoft Access 97

I

I


Thanom KanitpanyachareonResults /28

CHAPTER TV

REST]LTS

The result of study for this resemch is the information system for Computer

Hardware Information System Management: A Case Study of Yonok College. The

inforrration system is designed and develop using data flow analysis, relational

database and programming.

4.1 Current SVstem

Current computer Hardware Information system Management in gaph

presentation style, which may be more effective to describing the system since the

standard symbols, may limit communication.

l1 @a

lJ --Vender

o

O

t]tber

Figure 4.1 Graphic presentation of current receiving process


a

,


Figure 4.1 describes receiving process Vender submits hardware and receiving

report to officer. The receiving report consists of Vender detail (name and address),

receiving date, hardware detail, quantity and cost per unit of hardware. Next, Officer

will checking hardware and generate hardware ID register hardware data and

distribute hardware to user.

Figure 4.2 Crraphic presentation of maintenance process

Figure 4.2 Maintenance process. Officer will maintenance hardware. Valid

hardware is collected and generated to repair report and send hardware to Vender to

repair.

O

iloffler

a

t]VendEr


a

,l

Thanom Kanitpanyachareon Results /30

Figure 4.3 Graphic presentation of repair process

Figure 4.3 Repair process. User request officer to check out of order hardware.

Valid hardware is collected and generated to repair report and send hardware to

Vender to repair;

4.2 Results from System Analysis and Design

The results from system analysis and design consist of data flow diagram

(describes and analyzes the movement of data through sys0em), data dictionary

(defines systems elements), data stnrcture diagam (describes relation between

entities), stucture charts, inpuf, output and program specification.

4.2.lData Flow Diagram

In Figure 4.4,T\e presentation Saphs of current system are converted to new

system, which consists of the following entities: Section, Vender, Computer

Information Technolo gy Center.

o

lltber

O

uofficer

a

uVender



maintenane_dda

report

repair_report

omputer_dda

omputer_dgn

Figure 4.4 Context diagram of Computer Hardware Information Sy.stem Management

The new syst€m revealed 4 major process: data manipulation, transaction

process, queries process and report generation. The overall system, consisting of these

processes, is shown in Figrre 4.5

@mputaFErdt /ere

!fformatlonQ$ent

Figure 4.5 DFD Level l: Computer Hardware Information System ManagementCopyright by Mahidol University

t

!

Thanom Kanitpanyachareon Resuls /32

This data flow analysis also shows that system use 19 data stores, which are

divided into 2 categories:

1. ooBasic data": It consists of 14 data stores, which are COMPUTE&

HARDWARE, HW-TYPE, TIW_DETAIL, SIZE, SPEED, BRAI{D,

MODEL, DEPARTMENT, SECTION, ROOM, VENDER, EMPLOYEE

and USERRIGHT. These data stores are not usually modified. The system

fetch read-only data to display and reference.

2. "Trans datd': It consists of 5 data stores, which are RECEIVEMASTER,

RECEMDETAIL, MAINTENAIICE, MAINTENAI\ICESIGN and

REPAIR These data stores are modified in each transaction process

(recgive, maintenance and repair).

The details of "basic data" and "tansaction dataoo data stores are described in

section 4.2.4 Datfiase Design. The system is explained in detail through the lower-

level subsystem diagram, that developed to understand the activities associated with

the system.

Lervel 2l l.Dafa Manipulation

Data manipulation consists of the activities of adding, deleting and editing

data These activities manipulate daa in o'Basic datd' data store. Some data store has

one-to-many relationship with another one consequently; its activities have a little

different detail.



Figure 4.6 DFD Level2: lDatamanipulation

The doumward explosion of the data manipulation process maintains the

scheme introduced at the system level 3 in Figure 4.7.

r .lJfe -fi+q

a

I

,rl. ^gg \a

WC,

L



.9 ,*-.,-fN"/B!yr;@*-@\3_/ Y Y \=IA

/ ''.,'o

\BASCDATA + lDdale I

Y:7DFD LEVEL 3: 1.1 Add data

DFD LEVEL 3: 1.2 Delete data

DFD LEVEL 3: 1.3 Edit data

Figrue 4.7 DFD Level 3: Data manipulation

,,

Level2: 2. Transaction process

Transaction process consists of 3 activities: 'oreceive hardware", oomaintenance

hardware" and "repair hardwaxe", which are shown in Figrre 4.8. In Figure 4.5 DFD

Level I mentions that the activities use 'oBasic data" and "Trans datd', but it does not

explain. This level explains details of related data stores in.each activity. In addition,

DFD level 3 are shown in Figure 4.9 - 4.12 to clariff the activities.Copyright by Mahidol University

FfW-TY?E


IEPARIIEi.IT

FEcEVB,IASIER,

Qdr_repot->FEVEETAL

MANIE{AIICE

FfW-DETAL I-IAFOI,InRE

illAlNTS{A,NCESGhI

Mse_Repdr_data

Figrue 4.8 DFD Level 2: 2 Transaction process

"Receive Hardware" activity involves 5 subactivities, o'Generate Receive ID"

subactivity retrieves data from RECEMEIvIASTER. ooEnter Receive Data" subactivity

rerieves data from VENDER and gets receive date. "Assign Computer_ID/fIW_ID"

zubactivity will assign Computer_ID or HW_ID to represent each computer or

hardware. The subactivity retieves from 2 data stores: HARDWARE and

COMPUTER. 'oEnter Computer/flardware data" subactivity retieves data from I data

stores: ROOM, IIW_TYPE, HW_DETAIL, EMPLOYEE, DEPARTMENT,

SECTION, MODEL and BRANID and stores computer or hardware data into 5 data

stores: HW_TYPE, MODEL, BRAND, SPEED and SZE. *Add Receive data"

subactivity stores receive data into 2 data stores: RECEIVEMASTER and

RECEMEDETAIL.

&deve_daa

repdr_repqt\



--T---]./ z.t.z\

Reetve / Ehter \daa -'l hhle f\1/

RECE\EDETAL rW_DEIAIL

sEcnoNtDEPARil'Tg{T

Figure 4.9 DFD Level 3:2.1Receive Hardware

"Maintenance Hardware" activity involves 3 subactivities, 'oGenerate

Maintenance ID" subactivity retrieves data from MAINTENANCE. *Enter Receive

Data" subactivity retrieves data from VENDER and gets maintenance date. 'oEnter

Maintenance datd' subactivity retieves data from 11 data stores: COMPLJTER"

HARDWARE, HW-TYPE, HW_DETAIL, EMPLOYEE, DEPARTMENT,

SECTION, SPEED, SIZE, MODEL and BRANID. "Add Maintenance data"

subactivity stores maintenance data into 4 data stores: COMPUTER, HARDWARE,

MAINTENAI,{CE and MAINTENA}ICESIGN.

I

!

!


a


BtrTO\EE

t{/t/_DEtAL

IEPARII{B{r

SECTION

Figure 4.10 DFD Level 3:2.2 Maintenance Hardware

*Repair Hardware" activity involves 4 subactivities, o'Generate Repair ID"

subactivity retrieves data from REPAIR. "Enter Repair Datd'zubactivity retrieves

from 12 data stores COMPUTER, HARDWARE, IfW_TYPE, HW_DETAIL,

EMPLOYEE, DEPARTMENT, SECTION, VENDE& SPEED, Sr7E, MODEL and

BRAI\ID. o'Add Repair data" subactivity retrieves data from MAINTENAITtrCE and

stores repair data into 2 data stores: MAINTENAI\ICE and REPAIR. "Update

Hardware/Computer Status" stores hardware or computer status into 2 data stores:

HARDWARE and COMPUTER

h/hintgtaedata

llHntssredeta

MruNTEMNCES!GN


!


I.IW-DETAL

[EMRNE{T

MAINTEV/qNTFHGN

Figure 4.1 I DFD Level 3:2.3 Repair Hardware

o'Receive Repair Hardware" activity involves 4 subactivities, 'Yerifr Repair

ID" subactivity gets one data is REPAIR_ID, which is verified in subactivity "Veriff

Repair data" to eruure that there is REPA&ID in data store and rehieves from 12

data stores: COMPUTE& HARDWARE, HW_TYPE, HW_DETAIL, EMPLOYEE,

DEPARTMENT, SECTION, VENDER, SPEED, SIZE, MODEL and BRAI'{D. When

the REPA&ID pass the verification "Update Repair data" zubactivity stores data into

REPAIR. *Update Hardware/Computer Status' stores hardware or computer status

into 2 data stores: HARDWARE and COMPUTER.

--@drdE[a


I

!

a


DEPARIT#NT

Figure 4.L2DFD Level 3:2.4 Receive Repair Hardware

Level2: 3. Query process

Query process consists of 4 activities, which use all data stores to process dafa.

Rezult data is tabular, which have individual processing. See list of result datr in

section 4.2.2 data dictionary. o'Process data" activity is calculation, summary and

comparative analysis.

' 2.4.2\6rtfy Repalr

dda

RedwRepdrdda

2.4.1Verify@dr

ID

Redve--Mr

dda

)

a


I

srgu_ddaa


Figure 4.13 DFD Level2: 3. Query Process

Level2: 4. Report generation

Report generation consists of 4 activities, which use all data stores to process

printable reports. See list of printable reports n 4.2.2 dafa dictionar)r. ooProcess datao'

activity is calculation and summary data.

I

argu_dda

Figure 4.14 DFD Level2:4. Report generation


Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of lnform. Sys. Manag.)/41

4.22Dila Dictionary

The data dictionary elements developed for Computer Hardware Information

System Management consists of process, procedure, data flow and data s[rrcture. The

process of developing the data dictionary itself forces analysis to clarity their

understanding of the data in the system.

Figure 4.15 identifies each of the processes included in the DFD Level t. Each

process is briefly described to clarify its purpose. The inbound and outbound data

flows for each of the four processes are also shown.

PROCESS NAME:DESCRIPTION:

INBROT'ND DATA FLOWS:OUTBOTIND DATA FILOWS:

L DatamanipulationData of "BASIC DATA" is added, edited or deletedand stored in databaseUpdateable_dahData of "BASIC DATA" data store


INBROI'NI' DATA X'LOIilS:OUTBOUND DATA FI,OWS:

2. TransactionprocessReceiving report is received new hardware.Trans_dahData of *TRAI.IS DATA" data store.


INBROI'NI' DATA XI,OWS:

OUTBOTTNI' DATA FLOWS:

3. QueryprocessUser can select question to query by identifyingargument, system will process result data ln tabularformat of di.splay screenArgu_dataDah of 'tsASIC DATA" data storeData of 'TRANS DATA" data store


INBROT'ND DATA FLOWS:

OUTBOT'NI' DATA FLOWS:

4. Report generationUser can select question to generate report byidenti$ing argument, system will process pdntdreportArgu_dataData of "BASIC DATA" data storeDafa of"TRANS DATA" data storeReoort

Figure 4.15 First level process descriptions.

Figure 4.16 through 4.18 identiff processes that take place in the DFD level 3

of ransaction process. The processing logic in summarized. Some process has alias

name and procedure. The logic summary of procedrne is show in Figure 4.19Copyright by Mahidol University

Thanom KaniQanyachareon

I

Results /42

PROCESS NAME: 2.1.1 Generate Receive IDAIJ\IS: 2.2.1,2.3.1LOGIC STIMII{ARY:strSQL = ,SELECT * FROM RecieveMasteruSet rsMrc = cnDB.Execut{sfrSQl)If rsMrc.BOF Or rsMrc.EOF Then

LblRecieve_ID = "1"Else

RsMrc.MovelastlblRecieve_ID = rsMrclRecieve-p + I

End IfPROCESS NAME: 2.l.2Bnter Receive dataALAIS: 2.2.2,2.3.2LOGIC SIIMITIARY:SfrSQL = "SELECT * FROM RecieveMaster"Set rsMrc = cnDB.Execute(strSQl)SffSQL = "SELECT x FROM RecieveDetailSet rsDrc : cnDB.Execute(sfrSQl)Receive Date = DateSet rsVider = cnDB.Execute("Select * From Vender Where Vender Name = ,, &

CBVender.Text & u"')

If rsVender.RecordCount = 0 ThenIf MsgBox('lrJr,ruuhIruffruilrudral fiamtr$iu{oqnriiohlr" ,vbYesNo,"finnnrn") = vbYes

ThenfrmVender.Vender_Name.Text = CBVender.TextFlagnewhardware = 1

Exit subElse

CBVender.SetFocus' Exit SubEnd If

End IfPROCESS NAME: 2. I .3 Assign Computer_ID/[IW_IDI,OGIC SIJMIUARY:Dim newlD As StringSfrSQL = "SELECT * FROM computer ORDER BY computelid"Set rsHW = cnf)B.Execute(shSQl)With rsHW

If .BOF And .EOF ThenNewID = "C000000001"

Else.MovelastnewlD - uC' & Format(Righ(lComputer_ID, 9) + 1,"000000000.)

End If.CloseLBComputer.Caption = newlD

End With

I

Figure 4.16 Third level process descriptionsCopyright by Mahidol University

t


PROCESS NAIVIE: 2.1.4 Enter Computer/flardware dataLOGIC SIIMIVIARY:Dim rsHwDetial As New ADODB.RecordsetStrSQL = "SELECT HardWare.HW_p,

HardWare.HW_[pe, tlW_Type.]M_Tpe_Name, HardWare.Computer_ID,Model.Model Name, Brand.Brand_Name, Size.HW_Size,Size.HW_Size_Unit, Speed.HW_Speed, Speed.HW_Speed_UnitHardware.Remark FROM (((HardWare INNER JOIN Model ONHardWare.Model ID = ModelJVIodel_ID) INNER JOIN Brand ONModel.Brand_ID = Brand.Brand_ID) LEFT JOIN Size ONHardWare.HW_ID = Size.IIW_ID) LEFT JOIN Speed ON HardWare.HW_ID= Speed.HW_ID) INNERJOIN HW_Type ON HardWare.HW_Type =HW_Type.HW_Type WHERE ((HardWare.HW_Type) = TICP2') AND(HardWare.Computer_IDF' & HardWarelD & "')) OR((HardWare.HW_Type) =TIIIA2) AI{D ((HardWare.Computer_ID)='n gIIardWareID & "'));'

Set rsHwDetial = cnDB.Execute(strSQl)With rsHwDetial

If .BOFAnd.EOF ThenDetailComputer = "-uExit Function

Else.MoveFirstDduntil.EOF

DetailComputer = DetailComputer & " " & hw_t5rye_name & u' &lbrand_name & u' & model_name & " " &trf(IsNull(lhw_size)= True, uu, lhw_size & u ') & tr(IsNull(lhw_size_unit) = 1*r, "'',lhw_size-unit & u ') & (IsNull(lhw_sped) = True, "", hw_speed &u

") & trf(IsNull(lhw_speed_unit) = True, "", hw_str)@d_unit & ' ') &tr(IsNull(lRemark) = True, "", Ilf(lRemark = "-", "", lRemark & ' '))

. .MoveNextLoop

End IfEnd WithPROCESS NAME: 2.1.5 Add Receive dataALAISI: 2.2.3,2.3.3ILOGIC SIIMMARY:Fori: I Tocountrec

Set datalist : ListData.Lisfltems(i)Cmdst='INSERT INTO ReceiveDetail " & "(Receive_ID, HardWare_ID,

llardWare_Price, Garuntee_Out_Date) VALLJES (' &LblReceive_ID.Caption & u,'u & datalist.Subltems(3) &"',u' &datalist.Subltems(5) & ": "'& datalist.Subltems(6) & '')u

Set rsDrc = cnDB.Execute(cmdsn)NextCmdstr = "INSERT INTO ReceiveMaster " & "(Receive_[D, Receive_Date,

Vender_ID)'& "VALUES ('& lblReceive_ID.Caption &",# &Receive_Date.Text & "#, "'& rsVenderlvender id & '')u

Set rsDrc =

Figue 4.17 Third level process descriptions (continued)Copyright by Mahidol University


PROCESS NAME: 2.3.4 Updata Hardware/Computer StatusAI"AIII:2.4.4LOGIC SIJMIVIARY:If Left(CBHardware.Text, 1) = oC" Then

If CBRepair_Sesult.Lisflndex = 0 Thenset rscomputer = cnDB.Execut{'UPDATE computer set computer_status= 0 WHERE Computer_ID = '' & CBHardware.Text & n'r)

Elseset rscomputer = cnDB.Execute('LJPDATE computer set computer_status:2 WHERE Computer_ID - '' & CBHardware.Text & n'n)

End IfElse

If CBRepair_Result.Listlndex = 0 ThenSet rsHW = cnDB.Execute("UPDATE hardware set hw status = 0 WHEREHW_ID ='' & CBHardware.Text & u'')

ElseSet rsHW = cnDB.Execute("UPDATE hardware set hw status = 2 WHEREHWjD -'' & CBHardware.Text &''u)

End IfEnd IfPROCESS NAME: 2.4.1 Y erity Repair IDI,OGIC SI]MMARY:sfrSQL = "SELECT * FROM Repair Where isnull(Recieve_Date) = True'Set rsRepaif = cnDB.Execute(stSQl)Call ShowDatalnlistViewPROCESS NAME: z.4.zYertty Repair dataLOGIC STIMIVIARY:If Listdata.Lisfltems(Listdata.Selectedltem.Index).Subltems(l) o "" T'hen

lbtRepai{D.Caption = Listdata.Listltems(Listdata. Selectedltem.Index).Subltems(l)lblRepair_Date.Caption : Listdafa-Listltems(Listdata.Selectedltem.Index).Subltems(2)CBHardware.Text = Listdata.Listltems(Listdata. Selectedltem.Index).Subltems(3)lblHardWare_petail.Caption = Listdata.Listltems(Listdata. Selectedltem.Index).Subltems(4)Repair_Cause.Text = Listdata.Lisfltems(Listdata. Selectedltem.Index).Subltems(5)CBVender.Text = Listdata.Listltems(Listdata" Selectedltem.Index).Subltems(6)

End IfPROCESS NAIVIE: 2.4.3 Update RepairdataLOGIC SI]MMARY:sqlcmd -'UPDATE Repair Set Recieve_Date: '' & Format(Date, "mm/dd/y5ry5r")

& "', Repair_Result = "' & CBRepair_Result.Listlndex & "'WhereRepair_ID : " & lblRepair_ID.Caption

Set rsRepair = cnDB.Execute(sqlcmd)

Figure 4.18 Third level process descriptions (continued)Copyright by Mahidol University

;

!


PROCEDIIRE : ShowDatalnli stViewLOGIC SI]MIT{ARY:Dim strsqlsearch As StringIf rsRepair.RecordCount > 0 Then

Listdata. Listltems.ClearrsRepair.MoveFirstDoUntil rsRepair.EOF

Set datalist = Listdata.Listltems.Add(, , ",')datalist.Subltems( I ) = rsRepairlRepair_iddatalist.Sublt€ms(2) = rsRepairlRepair_datedatalist.Subltems(3) = rsRepairlHardWare_IDdatalist. Subltems(4) = dehilhardware(rsRepair! HardWare_ID)datalist.Subltems(5) = rsRepairlRepair_CausersVender.MoveFirstrsVender.Find ('Yende{D ='u & rsRepairlvendelid & u'')

datalist.Subltems(6) = rsVenderlVender NamersRepair.MoveNext

LoopEnd If

Figrue 4.19 Logic summary of procedure

DATA FLOW NAME: approvalITESCRIPTION: result tlat there is no eror after system verify data

IROM PROCESS: z.4.2Yertty Repair dataTO PROCESS: 2.4.3 Update Repair data

DATA STRUCTTIRE:ir DatefVender ID+[IardWare ID*Renair Cause

DATA FLOW NAME: argu_dataDESCRIPTION: Retrieved argument of query process and report generation

that is identified by userFROMPROCESS:

TO PROCESS: 3-0aQuerl Process

4.0 Report Generation4.1 Find data

DATA STRUCTURE:[Computer_p, Computer Status] + [HW-[D, Hw_status] + [Model ID] t

DATA FLOW NAME: del_dataDESCRIPTION: ID or name that can address row

FROM PROCESS:TO PROCESS: 1.2 Delete data

1.2.1 Find rowDATA STRUCTT RE: [ID. namel t depend on each data store *

Figure 4.20Datadictionary enties for data flowsCopyright by Mahidol University

Thanom Kanitpanyachareon Resulr /46

DATA IT,OW NAME: edit_dataDESCRIPTION: ID or name that can address row and new data for updates

the rowFROMPROCESS:

TO PROCESS: 1.3 Edit data1.3.1 Find row

DATA SIRUCTIJRE: [ID. namel * new dataDATA FLOW NAME: error

DESCRIPTION: Error message from qystem that respond to userIROM PROCESS: 1.1.3 Insert new row

TO PROCESS: 1.1.5 Display eror messageDATA STRUCTIIRE: * sEins of error statement *DATA FLOW NAIVIE: hardware status

DESCRIPTION: Status of flardwareIROM PROCESS: 2.3.3 Add Repair data

2.4.3 Update Repair dataTO PROCESS: 2.3.4 Update Hardware/Computer Status

2.4.4 Update Hardware/Computer StatusDATA STRUCTIIRE: [IardWare StatusDATA FLOW NAME: id

DESCRIPTION: Unique code that is primary key in data store and isgenerated by system or user input

IROM PROCESS: 1.1.1 Input or generated ID2. I .3 Assign Computer_ID/FlW_ID

TO PROCESS: 1.1.2 vority related table2.L.4 Ents Computer/flardware data

DATA STRUCTIJRE: * primary key in data store*DATA FLOW NAME: maintenance data

DESCRIPTION: dah of maintenance hardwareIROMPROCESS: 2.2.1 Generate Maintenance ID

2,2.2 Enter Maintenance dataTO PROCESS: 2.2.1 Generate Maintenance ID

2.2.2 Entet Maintenance data2.2.3 Add Maintenance data

DATA STRUCTTIRE:fMaintenance_IDrMaintenance_DatsFComputer_IDtMaintenance_Result+Employee IDI + EtW ID+Maintenance Detail+Maintenance Rebuild+Reoair IDIIDATA F.LOW NAME: receive data

DESCRIPTION: data of receive hardwareFROM PROCESS z 2.1.1 Generate Receive ID

2.1 .2 Enter Receive data2. 1.4 Enter Computer/Hardware data

TO PROCESS: 2.1.1 Generate Receive ID2.1.2 Entsr Receive data2. 1.3 Assigu Computer_ID/HW_[D2.1.5 Add Receive data

DATA STRUCTIIRE:[Receive_p+Receive_DateVender_ID] +lHardWare lD+HardWare PricerGaruntee Out Datel

Figure 4.2lDatadictionary enhies for data flows (continued)Copyright by Mahidol University


DATA FLOW NAIVIE: receive repair dataDESCRIPTION: data of repaired data

IROM PROCF,SS z 2.4.1 Veri8, Repair IDTO PROCESS: 2.4.1 Verl$ Repair ID

2.4.2Yefity RepairdataDATA STRUCTURE: [Repair ID+Recieve DatsfReoair ResultlDATA ILOW NAME: repair data

DESCRIPTION: out of order hardware dataFROM PROCESSz 2.3.1Generate Repair ID

2.3.2 Enter Repair dataTO PROCESS: 2.3.1 Generate Repair tD

2.3.2Enter Repair data2.3.3 Add Repair data

DATA STRUCTT]RE:[Repair_ID+Repair_DatsrVender_ID+HardWare_ID+Repair_CaussfRecieve_DatsrRepair ResultlDATA FLOW NAME: report

DESCRIPTION: report is generated by qystem that has varies styleIROM PROCESS: 4.0 Report generation

TO PROCESS: 4.3 Print resultDATA STRUCTIIRE:I Department Report, Section Report Employee Report, Out of order llardwareMaintenance Report, All tlardware Maintenance Report, Computer Repor!Hardware Report, Computer Detail Report Hardware status Reoort IDATA FLOW NAME: report_data

DESCRIPTION: data from report generationFROMPROCESS: 4.2 Process data

TO PROCESS: 4.3 Print resultDATA STRUCTIIRE: * same as the o'reDort" but it is not printed outout *DATA XLOW NAME: result_data

DESCRIPTION: data from query processIROM PROCESS: 3.2 Process data

TO PROCESS: 3.3 Display resultDATA STRUCTTIRE:I Hardware data, Computer dat4 Employee dat4 Departrrent dat4 Section datqReceive data, Maintenance daJa ReDair data IIDATA FLOW NAME: reEieved data

DESCRIPTION: data that is retrieved from data store when system get rowNumber

IROM PROCESS: 1.2.2 Display found row1.3.2 Display found row

TO PROCESS: 1.2.4 Delete row1.3.4 Update row

DATA SIRUCTIJRE: * data in data store *DATA FLOW NAME: verified data

DESCRIPTION: Data of basic data is verified with validation ruleIROM PROCESS : 1.1.2 Verrty related table

TO PROCESS: l. 1.3 Insert new rowDATA STRUCTURE: flD) + new data

Figure 4.22Datadictionary enties for data flows (continued)Copyright by Mahidol University

a

Thanom Kauipanyachareon Results /48

The other processes in data manipulation, query process and report generation

are not included in process description because the low-level of its DFD are sufficient

explanation.

Figrne 4.20 through 4.22 defiie 16 data flows ttrat are included in the system.

The processes tbat data flows originate from and into are also identified by number

and name. Each data flow is also described by the data shrctures it contains. Unnamed

data flows mean dl daa of data stores, which see detail in section 4.2.4 Database

design.

4.2.3Input and Output Desrgn

Output reports, which support the activity of the operation and management.

The outputs are generated in tubular form. See designed output reports in appendix B.

Input and oWput screeut are user-friendly with GIJI (graphic user interface,

they are MDI window. An MDI window is a frame window in which you can open

multiple document windows (sheets) and move among the sheets. The input screeilr

have input validation. Some output screerxi, especially in the query process have a

characteristic of drill down. A user can choose to access between a particular dat4

which is deep in deail, or just overall data, which is convenient for comparative

analysis. See designed screens in Appendix C.

4.2.ADatabase Design

Selecting and identiSing data from collected data and system requiremen! it

gets related entities, attributes and constaints. These entities axe identifiedCopyright by Mahidol University

a

Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of Inform. Sys. Manag.)/49

relationships and designed by relational database concept. Through normalization a

collection of data in a record sfructure is refined and shown in Figure 4.23 dat^

stnrcture diagram. The designed database diagram. The designed database is cental

database, which works as back office database. In addition, the inforrration system

uses in many places, somewhere may not support online system. For this reason, it has

an extra data store to store SQL commands of transaction process. The data store is

sent to database center and executed, then o'Trans data" has consistent data.

Description of data are shown as following.

1. Table: Computer

PK Field Name Data Tvne Description FK{ Computer ID Text(l0) Computer ID

Employee ID Text(6) Emplovee ID EmployeeRoom D Text(5) Room ID RoomTCP/IP Number Text(15) TCPIP nunberMaintenance_Next_Date DatelTime Maintenance date

next timeComputqStatus Byte Computer status 0 =

Goo{ l=Bad,2=Can't used, 3 -Repair

Brand ID Text(3) Brand ID BrandVender ID Tex(4) Brand ID Vender

2. Table: Hardware

PK Field Name Data Tvne Description FK{ HW ID Text(l0) Hardware ID

HW SN Text(S0) Hardware Serial NumberHW Status Byte Hardware status 0 :

Good, l:Bad,2=Can'tused. 3 : Reoair

Comouter ID Text(l0) Comouter ID ComputerModel ID Text(S) Model ID ModelHW Tvoe Text(S) Hardware Type HW TvoeRemark Text(255) RemarkCopyright by Mahidol University

Thanom Kanitpanyachareon

3. Table: HW_Type

4. Table: HVtr_Detail

5. Table: Size

6. Table: Speed

7. Table: Brand

Resuls i50

PK Field Name Data Tvoe Dqcription{ HW Tvpe Text(S) Hardware Trme

HW Twe Name Text(S0) Hardware TvneNameHW Tvoe Detail Text(l00) Hardware Tyoe DetailHW Sort Integer Hardware arange number

PK field Name Data Tvoe Description FK{ HW Trme Text(S) Hardware Type HW Tvpe

Speed Byte SpeedTable(0=Unused,I = Use)

Size Bye Size Table (0 = Unused, I :Use)

PK Field Name Data Tvoe Description f,'K{ HW ID Text(l0) Recieve ID Hardware

HW Size Sinele Recieve DateHW Size Unit Text(S) Hardware Size Unit

PK X'ield Name Data Tvoe Descrintion FK{ I{W ID Text(l0) Hardware ID Hardware

HW Speed Sinsle Hardware SpeedHW Speed Unit Text(S) Hardware Speed Unit

PK Field Name Data Tvne Description rK{ Brand ID Text(3) Brand ID

Brand Name Text(50) Brand nameHW Tvoe Text(5) Hardware tvoe code HW Tvoe


8. Table: Model

Fac. of Grad. studies, Mahidol univ. M.sc. (Tech. of Inform. sys. Manag.) / sl

9. Table: Vender

10. Table: Depaltnent

11. Table: Section

I

PK Field Name Data Tvoe Description F'K{ Model ID Tex(5) Model Code

Model Name Tex(50) Model NameBrand ID Text6) Brand Code BrandHW tvne Text(5) Hardware Tvoe HW TweModel Deail Text(255) Model Detail

PK Field Name I)ata Tvne Description{ Vender ID Text(4) Vender ID

Vender Name Text(l00) VenderNameVender Address Text(50) Vender AddressVender Citv Text(20) Vender CityVender Province Text0O) Vender ProvinceVender Zin Long Vender ZioVender Status Byte Vender Status

PK Field Name Data Tvoe Description{ Departuent No Integer DeoarhnentNo

Deoartuent ID Text(3) Departuent IDDeparfuent Name Text(60) Deparfuent narne

Departuen!_Status Byte Deparfuent stafus 0 = Active, I =Inactive

PK Field Name Data Tvne Description x'K{ Section ID Text6) Section ID

Section Name Text(60) SectionNameDepartuent No Integer DeparhentNo DeparhentSection Status Byte Section Status


Thanom Kanipanyachareon

12. Table: Room

13. Table: Employee

14. Table: UserRight

15. Table: ReceiveMaster

16. Table: RecieveDetail

Results /52

PK Field Name Data Tvne Description FK{ Room ID Text(S) Room ID

Room Name Text(S0) Room NameBuildine ID Text(5) Buildine ID HW Tvoe

PK Field Name Data Tvne Description X'K{ Emolovee ID Text(6) Emolovee ID

Emolovee Name Text(S0) EmployeeNameSection ID Text(3) Section ID SectionEmployee_Status Byte Employee Status 0 =

Active. I = lnactive

PK Field Name Data Tvoe Descrintion FK{ Emplovee ID Text(6) Employee ID Employee

PassW Text(l0) PasswordcRipht Byte Risht

PK Field Name Data Type Descrfurtion FK{ Receive ID Long Recieve ID

Receive Date Date/Time Recieve DateVender ID Text(4) Vender ID Vender

PK Field Name Data Tvne Decription ["I({ Recieve ID Long Receive ID ReceiveMaster{ HardWare ID Text(10) Hardware ID Hardware

HardWare Price Lons Hardware PriceGaruntee Out Date Date/Time Ganrntee Out Date


e

I

Fac. of Grad. Studies, Mahidol univ. M.Sc. (Tech. of tnform. sys. Manag.) / b3

17. Table: Repair

PK Field Name Data Tvoe Description FK{ Repair ID Long Repair ID

Repair Date Date/Time Repair DateVender ID Text(4) Vender ID VenderHardWare ID Text(l0) Hardware ID HardwareRepair Cause Text(250) Repair causeReceive Date DatelTime Receive repair dateRepair_Result Byte Repair result (0 = OK, t =

Can't Repair)

18. Table: Maintenance

. 19. Table: MaintenanceSigu

,

PK Field Name Data Tvne Description x'K{ Maintenance ID Long Maintenance ID

Maintenance Date Date/Time Maintenance DateComputer ID Text(l0) Computer ID ComputerMaintenance_Result Byte Maintenance Result

(0:Good"1:Bad)Employee ID Text(6) Employee ID Employee

PK Field Name DataTme Description f,.I({ Maintenance ID Long Maintenance ID Maintenance{ HW ID Tex(10) Hardware ID Hardware

Maintenance Detail Tefi(255) Maintenance DetailMaintenance Repair Text(255) Maintenance RepairRepair ID Long Repair ID Repair



ItMel_lqHQ[tlo&l_]emeBrend_!DnW_typiJldel_tbteil

ifw_rqH9Hw-$eedlM/_$eed_Unil

Enpbyee_!HHOkssill,cRSht

l-rw_Type(H0rlWlype_l',lamel-IdV_Type_DetailHW-Soft

Ffw_!D(HoFtw_s{lW_SatusOmputeilDModel_lDFW-TypeRemark

OomputerJD(H$Enployee_lDRoom_lDTCFIIP_NumberlUlaintenane_Next_DateOomputer-SdusBrend_lDVenderJD

RedilD(HQ@alr_DateVenderJDrhrdllEre_lDR4air_CausERmtue_tlateRepalr_Reult

Redeve_lD(HQnardWare-tO(HQtlard\t\trare_PHee€runteg_OJt_Elats

lVblntenane_lD(HQrilu_rD(HQIllalntenanc_DEtalli,/lalntenance_fupdrRepalrJD

Vender_lD(Fl$\6nder-l,lame\6ndel[66rcssVender_OtyVender-PovinceVender-apVendEr_Sdus

ttrlaintenane_lD(HglJbintenane-IhleComputeilDlcblntenancs_BultEinployee_lD

Figure 4.23 Datastructure dia,gam

I


r

I

Fac. of Grad" Studies, Mahidol Univ. M.Sc. (Tech. of Inform. Sys. Manag.) / 55

4.2.5 Procedure Deip

1. Transform the processes in DFD into stnrcture chart, which is easier to

maintain and reduce complexity.

Figrre 4.24 SEucture Chart

Boxes in structure chart are grouped and designed to window objects. Main

box used MDI window to contol other boxes that used MDlchild window.

Design additional events to ease of use in window operations style and

convenient operation such as ope& close and so on.

2.

3.r!


t


Table 4.lAncestor window objects

Process Event srouD EventData manipulation Window Open

CloseNavigation First

PreviousNextLastSearch

Data AddDeleteUpdateCancel

Transaction process Window OpenClose

Data Update masterInsert detailUpdate detailSearch

Query process Window OpenClose

Data Set argumentProcess data

Report generation Window OpenClose

Data Set argnmentProcess data

Convenient ZoomPage

Save as

Printer setupPrint

4.3 Computer Hardware Information System Management for Yonok College

Using Microsoft Access 97 to create database. Miqosoft Visual Basic 6.0

(SP5) is graphical application development tools and Crystal Report 8 is help

authoring tools for Computer Hardware Information System Management, which

implements under microcomputer Pentium III 1000 MHz CPU, Windows Xp

operating system. The information system consists of 3 major processes: l) DataCopyright by Mahidol University

I

!

at


Manipulation 2)Transaction Processing 3)Query and Report. The capability of

processes is show in Table 4.2

Table 4.2 Capability of process

Process CapabilityData manipulation Manipulate datainthese data store

l. Computer2. Hardware3. HW_Type4. HW_Detail5. Size6. Speed7. Brand8. Model9. Deparhent10. SectionI l. Room12. Vender13. Employee14. UserRisht

Transaction Process l. RECEIVEI\{ASTER2. RECEWEDETAIL3. MAINTENAI.ICE4. MAINTENAI.ICESIGN5. REPAIR

Query and report A. Tabular rezultl. Hardware data2. Repair data3. Computer data

B. Report4. Departnent Report5. Section Report6. Employee Report7. Out of order Hardware Maintenance Report8. All Hardware Maintenance Report9. ComputerReport10. Hardware ReportI l. Computer Detail Report12. Hardware status Report


I


Since the information system works otr networlq many users can use it. The

user are divided into 3 levels: Database Adminismtor, Operator and general user. The

privilege of each user group is shown nTable 4.2.

Table 4.3 Privilege ofusers

Process DalaManipulation

TransactionProcessins

QueryAnd reportUser

DBA { {Operator { {General user {

Users access the information system through login window, which verifies

username and password. In addition, Operator can access data of transaction

..'..processing in division and section that user are under.

a


t


CIIAPTER V

DISCUSSION

The Computer Hardware Information System Management for a case study of

Yonok College works on client/server network. The system consists of tbree major

processes as follows:

o Data manipulation: Manipulate relative data such as Vender, Computer,

Hardware, Section, Deparfuent and so on.

o Transaction processing: Support operation managemen! which are receive,

maintenance ard repair.

o Query and report: Process pre-defined outputs and preplanned printed

reports. A user can choose to access between a particular data, which is

deep in detail, or just overall data, which in convenient for comparative

analysis.

Users of the information system are divided into 3 levels: Database

administrator, operator and general user. All levels can access query and report menu,

data manipulation menu can be accessed by database administator level and

tansaction processing menu can be accessed by operator level. They access the

inforrration system through login windows, which verifies user ID, password and

accessible level. In addition, operator can access data of tansaction processing in

division and section in which user in under.Copyright by Mahidol University

Thanom Kanitpanyachareon Discussion /60

Moreovero the information system uses in many places, somewhere may not

support online system. For this reason, it has an exta function to store SQL commands

of tansaction process into file. The file is sent and executed at database center, then

the database center has up to date and consistent data.

The information system is designed and developed using data flow analysis,

relational database and procedural programming. It uses the Database painter of

Microsoft Access 97 to create database, Miuosoft Visuat Basic 6.0 to develop

application and Crysal Report 8.0 to create report.

The advantages of the information system for computer hardware information

system management for a case study of Yonok College are as follows:

- There is database and information system for computer hardware

information system management.

- There is application of Inventory and Management system, which solved

and improved inefficiency of computer hardware information system. The

information system changes from manual to computer base. The

information system intoduces online operation and standard database,

which reduces access time, increases accuracy and provides consistent

duta".

:



CHAPTER YI

CONCLUSION

The result of this study called ooComputer Hardware Information systemo'

enables users to manage computer hardware.

Data in the information system was desigued by relational database model.

Relational daabase is adequate for database model in this research because

infomration needs are two-dimensional and not gemplex datL which can be

normalized.

The system was developed by Visual Basic 6.0 that is procedural pro$amming

tool.

Data flow analysis was used in this researcb, it was as valuable for performing

process analysis although it had to be adjusted and refined in design process. Beside,

as data flow analysis have been used for a long time, this research may be guideline

for develop who would like to move his old data flow diagram and structure

programming to object-oriented programming.

The system had been tested and its results is quite satisfactory as following

features:

1. User-friendly application. This tool has been developed by using features

of Graphic User lnterface (GUI) in Visual BASIC 6.0 rurder Microsoft

Windows )(P environment.


Thanom Kanitpanyachareon Conclusion /62

More efficienfly operation. By use of computer aided processing, officer

can mana€re computer hardware easy and efficacious.

Reduce use of paper. The computer Hardware Information system was

designed for using with MS Access that stored schedule information in

database file.

Recommendation

1. Develop program into Object-oriented programming. Object-oriented

progralns can be more easily maintained and adapted than procedural

languages.

Develop this information system to Online Analytical Processing system

that is designed for live data access and analysis. Developer can add

statistical analysis model for viewing tends and required historical data.

The OLAP system is used by analysts and managers who frequently want a

higherJevel aggregated view of the data.

Apply this information system to Internet/Intranet application.

3.

a

I


Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Iech. of Inform. Sys. Manag.) / 63

B\f*ffit

,.,";#Tfin{

REFERENCES

l. Paker C, Case T. Management Infonnation System: stategy and Action. 2nd ed.

Singapore: McGraw-Hill Inc, 1993.

2. Stair M. Principles of Information System A managerial Approach. 2nd ed. United

State: Boyd & Fraser Publishing company, 1996.

3. Hansen GW, James v. Database Management and Design. 2nd ed. Prentice-Hall

lric,1992

4. Arnold J.R. Infioduction to materials management. 3td ed. USA: Prentice Hall

PTR;1998.

5. Tersine Richard J. Principles of inventory and materials management. 4m ed. USA:

Prentice Hall PTR; 1994.

6. James A. Senn. Analysis and design of information systems. 2nd ed. Singapore:

McGraw-Hill Inc, 1989.

7. Roger S. Pressman. Softnrare engineering a practitioner's approach 4e ed.

Singapore: McGraw-Hill Inc, 1997

8. utrr?vrorf,uqltrf,urr:rrfi:rv. nrruimr:iaqunvnrffndo. n'udn#rd 5. nqo,nu' drrinfiur{

rur,rrtvrorfroqlrr{ur::ufr:'w; 2533.

9. quui o{Infi1 nr:f,odounsuiur:rflaq. nq{ryrr{: I:$ur{ryaufi u$;2539.

ffi

10. oqnd orqr{flQa. nr:finds. u'urfrnfid 2. nqumu: I:ru'ur{uur?murfrur::rsr ani;2538Copyright by Mahidol University

f

Thanom Kanitpanyachareon References / &[

I l. tonr Ynnsrd. In:rnuirn:rc#ttacoonuuursuu{rJn?uqxuasnr?0floilfdE. Ri{ryrfi { Rrf,

a'rnrvrnlulafidr:dlrr?rf, nusrflnlulntfftrrnrrnf, florriuwrnlulaiinrenourndn$lq0r

mfir:nranruri.r; 2540

12. Nathavipa Phasuk, Voramon Uronkam. Management of equipment data of

Industrial Engineering Departuent by Microsoft Access. Bangkok:

Factory of Engineering Mahidol University; 1996.

I3. trn'nrfisriEfinqa. reuudl:dumsdrriundrurunuravfiEryitorlrwururallurnluqj

ttvrorfinuf:Jiqqrinuraraofuurriil,fr-n errr?murmaafnoufiernofl.

14. Usa Jugtimongkol. Information system for government inventory management:

A case study of Land development deparfinent. Bangkok Factory of

Engineering, Mahidol University; 2000.

15. Microsoft Corporation. (2001). Microsoft Visual Basic. Available from:

http://www.micorosft.com [Accessed 2001,Nov,22].

16. Crystal Decisions Corporation (2001). Se4gate Crystal Report 8.0. Available

from: http://www.crystaldecisions.com [Accessed 2001,Nov,22].


Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of Inform. Sys. Maoag.) / 65

I

APPENDXA

REPORT



l. Exsisting Repoil

AppendixA/66

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' I'.-.:'.: ".1:-

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Appendix A / 72

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Hardware status ReportCopyright by Mahidol University

Thanom Kanitpanyachareon Appendix B / 76

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APPENDIX B

DESIGNED SCREEN

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Fac. of Grad" Studies, Mahidol Univ.

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Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of lnform. Sys. Manag.) / g3

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3. Qrnery and Report

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Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of lnform. Sys. Manag.) / BS

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Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of Inform. Sys. Manag.) / g7

APPENDIX C

PROGRAM SPECIFICATION

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Dim sqlcmd2 As String

Private Sub CBSectlon-reyrressgrey@Dim ndeptmp As New ADODB.RecordsetIfKeyAscii = 13 Then

If Len(Trim(CBSection.Text)) > 0 Thensqlcmd: ,SELECT * FROM Section WHERE Section_Name = "' & CBSection.Text & ',"'Set rsl = cnDB.Exec6e(sqtcmd)rsl.Find ("Section_Name=,', & CBSection.Text & "',')Set rsdeptup = cnDB.Execute("Select t From Deparfirent Where Deparonent_No = ,, &

rsllDepartuent_No)hlDepartrrent.Caption = rsdeptnp ! Department_Name

End tfEnd IfCall changeobj(CBSection, KeyAscii)

End SubPrlvate Sub CmdAdd_ClickQ

Call CleardaraIf rs.BOF And rs.EOF Then

LblFmfloyee lD.Caption = 0Else

Rs.MovelastLblEmployee_ID.Caption = rslEmployee_ID + I

EndIfEmployee_Name.Locked = FalseCall Cmdlock(Me)Newdata= IEmployee_Name. SetFocus

End SubPrivate Sub CmdCancel_Clicke

Call CleardaaCall ObjectlockCall CmdUnlock(Me)CmdEdit.Enabled = FalseNewdata:0

End SubrrNate suD cmdt elete_clicko

IfMsgBox ('eYo.rnr:au{oganrinlru:ron.,rd?", ,blrforration + vbyesNo, .,6uf,u,,) = vbyes Then

sqlcmd -'uPnATE F-mployee set Employee_Status: I where Employee ID ='n &lblEmployee_ID.Caption &,""

cnDB.BeginTranscnDB.Execute (sqlcmd)cnDB.CommitTransadodcl.Refreshdatacridl.Refreshset rs -- cnDB.Execute(strSQl)Call CmdCancel=Click

End If Copyright by Mahidol University

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Fac. of Grad. Studies, Mahidol Univ.

Prlvate Sub ObjectLoctrgEmployee_Name.Locked = Ttue

Sub


Private Sub CmdClose_ClickeUnloadMe

lblEmployee_ID. Caption = EmptyEmployee_Name.Text = EmpgCBSection.Text= EmptyIblDepartnent. Caption = EmptyAdodcl.RecordSource = sqlcmd2Adodcl.RefreshSet DataGridl.DataSource = AdodclDataGridl.RefreshAdodc I.Recordset MoveFirst

Employee_Name.Locked = FalseEnd SubPrivate Sub CmdEdit Clicke

Call objectunlock

Prlvate Sub CmdI'irst_CtickeIf rs.RecordCount > 6-th"o

-

rs.MoveFirstAdodc l.Recordset.MoveFirstCall ShowDaa

End If

Prlvate Sub Cmdlast CtictreIf rs.RscordCount > d'Then-

rs.MovelastAdodc l.RecordsetMovelastCall ShowData

End If

Private Sub CmdNext_ClickeIf rs.RecordCount> 6-then

-

Ifrs.EOF Thenrs.MovelastAdodc I .Recordset.Movelast

End Ifrs.MoveNextAdodc I .Recordset.MoveNefiIfrs.EOF Then

rs.MovelastAdodc I .Recordset.Movelast

End IfCall ShowData

End IfEnd Sub Copyright by Mahidol University

Thanom KanitpanyachareonAppendix C / 90

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Private suu cmarrevi-@lf rs.RecordCount > 0 Then

If rs.BOF ThenrsJVIoveFirstAdodc I .RecordsetMoveFirst

End Ifrs.MovePreviousAdodc l.Recordset.MovepreviousIfrs.BOF Then

n.MoveFirstAdodc I .RecordseLMoveFirst

End IfCall ShowData

End trfEnd SubPrivate Sub CmdSave_Clicke

Ifnewdata o 0 ThenIf Len(Trim@mployee_Name.Text)1 = 0 Then

MsgBox, nlarrlddonrinl ru,, vbCritical,,,fi nfl atn,,Employee_Name. SetFocusExit Sub

End IfIf Len(Trim(CBSection.Text)) = 0 Then

MsgBox "nlorl6onunun", vbCritical,,'finnoln',CBSection.SefFocusExit Sub

End Ifsqlcmd = "SELECT t FROM Section WHERE Section Name =',' &

CBSection.Text & ,""Set rsl = cnDB.Execute(sqlcmd)Section_ID = rsl lSection IDIfnewdata= I Then

sqlcmd = "INSEM INTo lmptoyere @mployee_ID, Employee_Namq section_ID) " & _' VALUES (' &- lblEmproyee_ID.capion & ;, "' & Emproyei_Name.rext ani'. g=

Sectiott-ITr & ')'Else

sqlcmd - 't PDATE xmnlgvee set Employee-_Name = "' & Employee_Name.Text & _"', Section_ID =,,& Segtion_ID & ,,Where Employee_D =n'&lblEmployee_ID.Caption & ;,

EndffcnDB.BeginTransSet rs = cnDB.Execr$e(sqlcmd)Set rs = cnDB.Execute(strSel)cnDB.CommitTransCall CleardaACall ObjectlockCall CmdUnlock(Me)CmdAdd.SetFocus

End IfEnd Sub



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Private Sub CmdSearcn_crcrg-Dim rsEmpTmp As New ADODB.RecordsetDin SqlEmpTmpAs StringDimaaAs StingCall Cleardata

aa = InputBox(,{ddanrinlruddornr:rfuilt,,,,,ifufl .t",,)

ffLen(aa) = 0 Then Exit SubIfn.RecordComt> 0 Then

IflsNumeric(aa) Thenrs.MoveFirstp_-Fr1d_(Employee_Nane =,n & aa &,',,)',, adSearchFonrard)Ifrs.EOF Then

MsgBox n'ldnumlnlrudelolnrrduur,,,,,'duil.t,,

Call CmdUnlock(Me)Exit Sub

ElseCall ShowData

End IfEIse

SqlF.mpL, = "SELECT Employee.Employee_ID, Employee.Employee_Nam0, ,, & _"section.section-Name, Deparment.DepartmenlName F-ROM i, & -"@mployee INNER JOIN Section ON Employee,Section ID =Section.Section_ID) " & _'INMR JOIN Deparfinent ON Section.Department_No =Deparhent Department_No " & _'UPT^^.

_Em, ployee.Employee_Status = 0 And Employee_Name like ,o/o,, & aa

& no/6'tt & .ORDER BY Employee.Employee_IDiSet rsEmpTmp = cnDB.Execute(SqlEmpTmp)If Not rsEmpTmp.EOF Then

set DataGridl.Datasource = rsEmpTmpDatacridl.Refresh

Else

IVtsgBox "lilnunrinuudelolnrrdfuur,',, nrlufl .t,,

Call CmdUnlock(Me)Exit Sub

End IfEnd If

Else

iltsgB ox " ldnunu'nuudclol nrrduil r ",, "rluu.t,Call CmdUnlock(Me)Exit Sub

End IfEnd SubPrivate Sub ShowDataQ

lblEmployee_ID.Caption = 6 ! F.mployee_IDEmployee_Name.Text = rslEmployee_NameCmdEdit.Enabled = TrueCmdCancel.Enabled = Truesqlcmd = "SELECT * FROM Section WHERE Section ID = ," & rslsection ID & ,',Set rs I = cnDB.Execute(sqlcmd)CBSection.Listlndex = rslSection IDsqlcmd = "sELECT * FRor\{ D^epironent WHERE Department_NO: ,, & rsl lDepartment_NoSet rsl = cnDB.Execute(sqlcmd)lblDepartnnent.Caption = rs Mepartnent_Name

End Sub Copyright by Mahidol University

Thanom KanitpanyachareonAppendix C / 92

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Private sun Oata

lblEynloVe-e_ID. Caption = Dahdrid I .Columns(0).Tem

!ryloVee_Name.Text = DataGridl.Columns(l).TexCBSection.Text = Datacridl.Columns(2).Text

PD."lfg*.Caption = DataGrid l.Cotunnos(f ).fextCmdEdit Enabled = TrueCmdCancel.Enabled = True

End SubPrivatesub Unployee-

_ Call changeobj@mployee_Name, feyeiciiiEndPrivate Sun Form_LoaaQ

CallmainshsQl = "SELECT't'FROM section ORDER By section ID"Set rs = cnDB.Execute(strSel)IfNot rs.EOF And Not rs.BOf then

rs.MoveFirstDo Until rs.EOF

CBSection.Addltem rs! Section Namers.MoveNext

LoopEnd IfstrSQL = "SELECT r FROM Employee where Employee-Status = 0 oRDER By Employee_ID',Set n = cnDB.Execute(strSel)sqlcmd2 : "SELECT

_Employee.Employee_ID, Employee.Employee_Neme,,, & _"section.sectign_\ame, Deparment.DepartmenlName FROM,' &"@mployee INNER JOIN Section oN Employeesection_n = s".tioo.s""tion_ID)',&_,INNER

_JOIN Departnent ON Section.Departnent_No =Departuent.Departuent_No " & _

"where Employee.Emproyee_status = 0 oRDER By Employee.Emproyee_lD,,

newdata = 0Call ObjectlockCall CmdUnlock(Me)

End Sub


Fac. of Grad. Studies, Mahidol Univ M.Sc. (Tech. of Inform. Sys. Manag.) / 936 [' .rFl,Yr, l+

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2. TransactionEq. R"p"i"Option E:rplicitDim rsRepair As New ADoDB.Recordset, rsRepaircount As New ADoDB.RecordsetDim rsvender As New ADoDB.Recordse! ncomputer As New ADoDB.RecordsetDim rstlW As New ADoDB.Recordse! nllardware As New ADoDB.RecordsetDim rsMaintenanceSigp As New ADODB.RecordsetDim newdaAAs B),teDimsqlcmdAs StingDin datalist As ListltemPrivate Sub CBVender_ChangeQ

CBVender_ID.Listlndex = CBVender.ListlndexEnd SubPrivate Sub CBVender_Clickg

CBVender_ID.Listlndex = CBVender.ListlndexEnd SubPrivate Sub CBVender_ID_ChangeQ

CBVender.Listlndex = CBVender ID.ListlndexEnd SubPrivate Sub CBVender_ID_CtickQ

CBVender.Listlndex : CBVender lD.ListlndexEnd SubPrivate Sub CmdAdd_CtickQ

If CBHardware.listcount = 0 Then Msgtsox ,'nloru6onrfinqrlnroi', : Exit Sub

Call CleardataIf rsRepaircount.BoF And rsRepaircount.EOF Then

lblRepaft_ID.Caption : IEIse

rsRepaircount.MovelastlblRepai{D.Caption = nRepaircountlRepair_id + I

End IflblRepah_Date.Caption = Fonnat(Date, "dd/mm/y5ryy,')CBHardware.Locked : FalseRepair_Cause.Locked = FalseCBVender.Locked = FalseCBRepair_Result.Locked = FalseCall Cmdlock(Me)newdata = IRepair_Cause.SetFocus

End SubPrivate Sub CmdCancel_ClickQ

Call CleardmCall ObjectlockCall CmdUnlock(Me)CBRepair_Result.Enabled = FalseCmdEdit.Enabled = FalsesfSQL = "SELECT * FROM Repair,'Set rsRepaircount = cnDB.Execute(strSQl)If rsRepaircountBOF And rsRepaircount.EOF Then

lblRepair_ID.Caption = IEIse

rsRepaircount.MovelasttblRepair_ID.Caption = rsRepaircountlRepair_id +

End Ifnewdata:0

End Sub

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Private Sub Cmdllelete_ClickeIf MsgBox('dalnrrour?ogad.rfincronr:d?,,, vblnformation + y!fs511o, ,,6u6un)

= vbyes Thensqlcmd = ,UPDATE Repair Set Repair-Shnrs = I Where Repa[ID: , & hlRepah_ID.CaptioncnDB.BeginTranscoDB.Execute (sqlcmd)cnDB.CommitTransDataGridl.RefreshSet rsRepair = cnDB.Execute(strSel)Call CmdCancel Click

End IfEnd SubPrivate Sub CmdClose_Cliche

Unload MeEnd Sub

End Sub

Private Sub CleardataQCBHardware.Text = EmptyRepair_Cause.Text = EmptyCBVender.Text = EmptyCBRepair_Result. Text = EmpglblRepair_ID.Caption = EmptylblRepair_Date. Caption = EmptyIblHardWre_Detail.Caption = Empty

Private Sub ObjectlockQCBHardware.Locked = TrueRepair_Cause.Locked = TrueCBVender.Locked = TrueCBRepair_Result.Locked = True

End SubPrivate Sub objectunlockQ

CBHardware.Locked = FalseRopair_Cause.Locked = FalseCBVender.Locked = FalseCBRepair_Result, Locked = False

End SubPrivate Sub CmdEdit_ClickQ

Call ObjectlockCall Cmdlock(Me)CBRepair_ResultEnabled = Truenewdata:2CBRepair_Result. Locked = FalseCBRepair_Result SetFocus

End SubPrivate Sub CmdX'int_ClickQ

If rsRepair.RecordCount > 0 ThenrsRepair.MoveFirstCall ShowDara

End IfEnd SubPrivate Sub Cmdlast_CtickQ

If rsRepair.RecordCount > 0 ThenrsRepair.MovelastCalX ShowData


Fac. of Grad. Studies,Ivlahidol Univ. M.Sc. (Tech. of Inform. Sys. Manag.) / 95

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Private Sub CmdNext_ClickQIf rsRepair.RecordCount > 0 Then

If rsRepair.EOF ThenrsRepair.MoveLaS

End IfrsRepair.MoveNextIf rsRepair.EOF Then

rsRepair.MovelastEnd IfCall ShowData

End IfEnd SubPrivate Sub CmdPrevious_Cticke

If rsRepair.RecordCouut > 0 ThenIf reRepair.BOF Then rsRepair.MoveFirstrsRepair.MovePreviousIf rsRepair.BOF Then rsRepair.MoveFirstCall ShowData

End IfEnd SubPrivate Sub ShowDataQ

lblRepair_ID.Caption = rsRepairlRepair_idlblRepair_Date.Caption = rsRepair! Repair_dateCBHardware.Text = rsRepairlHardWare_IDIblHardWare_Detail.Capion : detailhardware(rsRepairlHardWareRepair_Cause.Tort = rsRepairlRepair_CausersVender.MoveFirstrsVender.Find ("Vender_ID -',' & rsRepairlvender_id & ,,'n)

CBVendEr.Text = rsVe,nderlVender NameCall CmdUnlock(Me)CmdAdd.Enabled= FalseCmdEditEnabled= TrueCmdCancel.Enabled : True

End Sub

_ID)

Private Sub DataGridl_DblCtictrQlblRepair_tD.Caption : DataGrid I .Columns(0).TextRepair_Cause.Text = Datacridl.Columns(l).TextCBllardware.Text = DaaGridl .Columns(2).TextCmdEdit"Enabled = TrueCmdDelete.Enabled = True

End SubPrivate Sub Listdata_DbtCtickQ

If Listdata.Listltemi(ListdataSilectedltem.Index).Sublrems( I ) o,, ThenlblRepair*ID.Caption = Listdata.Listltems(Listdata.Selectedltem.Index).Subltems(l)lb_lRepailDate.Caption = Listdatalistltems(Listdata"Selectedltem.nae4.SuUttems(21CBHardware.Text = Listdata.Listltems(ListdataSelectedltem.Index).Subltens(3)IblHardWare-Detail.Capion = Listdatalistltems(Listdata.Selectedltem.Index).dubltems(4)Repair_Cause.Text = tistdata-Listltems(Listdata-Selectedltem.Index).Subltems(5)CBVender.Text = Listdatalistltems(Listdata.Selectedltem.Index).Subltems(6)'

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Call CmdUnlock(Me)CmdAdd.Enabled = FalseCmdEdit.Enabled = TrueCmdCancel.Enabled = True


Thanom Kanitpanyachareon AppendixC/96 L

Prlvate Sub CmdSave_ClickQIfnewdatao 0 Then

If kn(Trim(CBVender.Text)) = 0 ThenMsgtsox "nlnur;rlfiuddldol ", vbCritical,,fi aff n1n,,

CBVender.SetFocusExit Sub

End IfIf Len(Trim(CBHardware.Text)) = 0 Then

MsgBox "nlorldrriagilnrei,', vbCritical,,'R'nfi orn,'

CBHardware.SetFocusExit Sub

End IfIf Len(Trim@epair_Cause.Tort)) = 0 Then

IvlsgBox "nlerusqomm', vbCritical,,'fiefforn"Repair_Cause. SetFocusExit Sub

End IfIfnewdata= I Then

sqlcmd: "LTPDATE maintenancesip set Repair_ID = " & IblRepair_ID.caption & ', whereHW_ID = "' & CBHardware.Text & "'And Repair_ID = 0,

Set rsMaintenanceSip = cnDB.Execute(sqlcmd)sqlcmd = "INSERT INTp Repair " & '@epair_lD,Repair_Date, vender_ID, Hardware_ID,

Repair_Cause) VALTJES (- & lblRepair_ID.Capion & ,', u'& Forrrat(Date,'mm/dd/yyyy") & n', "' & CBVender_ID.Text & u,, u'& CBHardware.Text & rr, trr&Repair_Cause.Text & "')"

If Le(CBHardware.Text, l) = "C" ThenSet Bcomputer = cnDB.Execute("IJPDATE Computer set computer_status = 3 WHERE

Computer_ID = "'& CBHardware.Text & n"')

EIseset rsHW = cnDB.Execute('LTPDATE hardware set hw sEtus = 3 WHERE HW ID = ,,,&

CBHardware.Text & n',)

End IfCBHardware.Removeltem (CBHardware.ListlndeD

ElseIf Len(Trim(CBRepair,gesult.Text) = 0 Then

Msgtsox "nlamdonwantidotn, vbCritical, "ficna.ln,CBRepair_Rezult. SetFocusExit Sub

End Ifsqlcmd - 'ITPDATE lryt_S* Recieve_Date =,,' & Format@ate, "mm./dd/gryy") & _

l'-', Repair_Result ='n & CBRepair_Resultlistlndex & u'Where Repair_ID:-; & _

lblRepair_ID.CaptionIf Le(CBHardware.Texg l) = "C'Then

If CBRepaii_Rcult.Listlndex : 0 Thenset rscomputer: cnDB.Execute(',upDATE computer set computer_status : 0 WHERE

Computer_ID = "'& CBHardware.Text & n'u)

ElseSet rsComputer = cnDB.Execute("LJPDATE Computer set computer_status = 2 WHERE

Computer_ID = "' & CBHardware.Text &,u')End If

EIseIf CBRepair_Result.Listlndex : 0 Then

set rsHW: cnDB.Execute("UPDATE hardware set hw status = 0 WHERE ffi D = "'& CBHardware.Text & u'")Copyright by Mahidol University


a

Set rsHW = cnDB.Execute('UpOAlS& CBHardware.Text & u"')

End IfEnd If

End IfSet rsRepair = cnDB.Execute(sqlcmd)Set rsRepair = cnDB.Execute(sfsel)Call CleardataCall ObjectlockCall CmdUnlock(Me)Call ShowDatalnlistViewCmdAdd.SetFocus

End IfEnd Sub

ID=rn

Private Sub CmdSearch_ClickSDim aaAs StringCall Cleardata

aa = lnputBox("1ddrn'unudlsio!flrdolnr:ifuilt",',Cluil.t',)

Iflen(aa) = 0 Then Exit SubIf nRepair.RecordCount > 0 Then

rsRepair.MoveFintsRepair.Find ("Repair_ID =,,, &a & ,',n)',, adSearchForward)IfrsRepair.EOF Then

MsgBox' tinu ihn-u nrrds qiolddsl nrr rlufi .rn,,',rlufi r"Call CmdUdock(Me)Exit Sub

ElseCall ShowDaa

End tfElse

MsgBox " hh udrdu nrrd.r.rs! ddo.r nrrluil.r',,, " iiuil.t,,Call CmdUnlock(Me)Exit Sub

End IfEnd SubPrivate Sub CBllardware-KeyPres(KeyAscii es tntegery

If KeyAscii = 13 ThenIf Len(Trim(CBHardware.Text) = 0 Then


End IfSet rsMaintenanceSip = cnDB.Execute("Select * From Mainte,nancesip Where Repair_ID =

0r)If rsMaintenancesign.RecordCount o 0 Then

rsMainte,nanceSign MoveFirstrsMaintenanceSign.Find (,HW_ID = "'& CBHardware.Text & ',"')If Not rsMaintenanceSip.EOF Then

_ Repair_Cause.Text = rsMaintenanceSignlMaintenance_DetailEnd If

End IfEnd If

Call changeobj(CBHardware, KeyAscii)End SubPrivate Sub Repair_Cause_KeyPress(KeyAscii As Intqer)

Call changeobj@epair_Cause, KeyAscii)End Sub



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Private Sub Repair_Cause_GotFocusgIf Len(Trim(CBHardware.Text)) > 0 Then

If Le(CBHardware.Text, l) = nC'Then

Set nComputer = cnDB.Execute("Select * From Computer Where Computer_lD =',' &CBHardware.Text& "'')

If rsComputer.RecordCount = 0 Then

Iv[sgBox "tinurrTrnstfi:rnofd:aq", vbCritical, "finnaln,CBHardware.SetFocusExit Sub

EIseIf rsComputerlcomputer_shtus = 0 Then

Ir[sgBox "R1omr?odounorfi'rrnsi6nnfirdorornlrinunzufinilnn'm.rnouiirnofdrnrir:',

vbcritical, "ilaraln"CBHardware.SetFocusExit Sub

EIseIf rsComputerlcomputer_status = 2 Then

MsgBox "n1orm:mdounoln'rtnsfsnnfiru"orornRsrn'T rnofn'.rnrir, ldonriinnrrldruliludr",

vbCritical, "finfialn"CBHardware.SetFocusExit Sub

End IfEnd If

ElseSet rsHW = L:nDB.Execute("Select * From hardware Where HW ID = "' & CBHardware.Text& ,ru)

If rsHW.RecordCount= 0 Then

MsgBox'lrinusil"dqiln:ofdrrq", vbCritical, "finfi arn"

CBHardnmre.SetFocusExit Sub

ElseffrsHWlhw stahrs=0Then

MsgBox "Rlatmt:odouqrJntei6nnftrdororntinun:ufinr.lnfitorqrlnroinlRn'rr", vbCritical,ttFt'RflB'lnn


EIseIf rstlWlhw_status = 2 Then

Msgtsox "Rlottortodouqrlnroi6nnfiru{orcrnqrln:dn-rndr:ldsnra'nnrrlftrulrJrrd,r', vbCritical,

'finfla1e"CBHardware.SetFocusExit Sub

End IfEnd If

End IfIblHardWare_Detail.Caption = detailhardware(CBHardware.Text)

EIseCBHardware.SetFocus

End IfEnd Sub



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PrivateSub Form_LoadSCallmainSet rsVe,nder = cnDB.Execute('SELECT * FROM Vender WHERE vender_status = 0,,)If rsVender.RecordCount > 0 Then

rsVender.MoveFirstDo Until rsVender.EOF

CBVender_IDAddItem rsVender! vender_idCBVenderAddltem rsVenderlVender NInersVender.MoveNext

LoopEnd IfCBRepair_ResulrAddttem "douriou9os"

CBRepair_Result.Addltem "ldarurrodotld"SESQL = "SELECT t FROM Hardware WHERE hw_status = I Order by hw_id"Set rsHW : cnDB.Exeq[e(sESQL)If rsttW.RecordCount > 0 Then

rsHW.MoveFirstDo Until TsHW.EOF

CBllardware.Addltem rsHW ! hw_idrsHW.MoveNext

LoopEnd IfStrSQL = "SELECT'r FROM Computer WHERE computer_status = l"Set rsComputer = crDB.Execute(sfSQl)If rsCompfier.RecordCount > 0 Then

RsComputer.MoveFirstDo Until rsComputer.EOF

CBHrdware.Addltem rsComputer! Computer_lDRsComputer.MoveNext

LoopEnd tfCBRepair_ResultEnabled = FalseSet rsRepaircount = cnDB.Execute('SELECT * FROM Repair")Set rsRepair = cnDB.Execute('SELECT t FROM Repair Where isnull@ecieve_Date) = True,')Call ShowDatalnlistViewNewdata = 0 : Call Objectlock : Call Cmdunlock(Me)Sub

Private Sub ShowDatalnlistViewQDim sffiqlsearch As StringIf nRepair.RecordCbunt > 0 Then

Listdatalistltems.ClearrsRepair.MoveFirstDo Until rsRepair.EOF

Set datalist = ListdaA.Listltems.Add(, , "")dahlist.Subltems(l) = nRepairlRepair_iddahlist.Subltems(2) = rsRepairlRepair_datedatalistSubltems(3) = rsRepair! HardWare_IDdatalisf Subltems(4) = detailhardware(rsRepairlHardWare_tD)datalistSubltems(s) : nRepair! Repair_CausersVender.MoveFirstrsVender.Find ("Vender_ID = "' & rsRepairlvendelid &',',')dahlist.Subltems(6) = rsVender! Vender_NasrersRepair.MoveNext

LoopEnd If

End Sub Copyright by Mahidol University


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Private Function detailhardware(EardWarelD As String) As Str:lngIf Le(HardWareID, l) = "C" Thens'[rsqrsearch="'ffi*ffi1ffi#;H:T#-frffir-***=..

'Size.HW_Size_Unit, [email protected]_Speeq SFedHW_Speed_Uni!', & _'Hardware.Remark FROM ((Hardware INNER JOIN Mdel ON " &"HardWare.Model_ID = Model.Model_ID) INNER JOIN Brand " & _

]OtI Model.Brand_ID = Brand3rand_tD) LEFT]gry Sirc : g _

j3N fiHSffi :ffi.B = 3ffi3iffi,iRilffi"_t* . . _

"ON HardWare.fW_fype i ffW_fype.tiW_Type ,, & _' WHERE (((HardWare.HW_Tpe) = TICP2) " &_'AI{D ((Hardware.Computer_[D)='' & HardWarelD & '')) OR'&_"(((HardWare.HW_Tpe)=I{HA2) AIIID ((HardWare.Computer_ID)="' &HardWarelD & "));"

detailhardware = "Computer'Elses'Esqsearch']ffi*ffi!

u-ON HardWare.HW_ID = Size.HW_ID) LEFT JOIN Speed " & _

"ON HardWre.HW_ID: Speed"HW_ID) INNER JOIN HW_T1pe ' & _ltON IlardWare.t[W_Type = HW_gpe.HW_Type " & _

deta,hardware = :yo*'((Hardware'HW-ID)= "' & HardwarelD & "'));'

End IfSet rsHardware : cnDB.Execute(strsqlsearch)If rsHardware.RecordCount > 0 Then

rcInardware.MoveFirstDo Until rsHardware.EOF

With rsHardwaredetailhardware = detailhardware &" " & _

lhw_type_name&" " & _lbrand :name &" " & _lmodel_name&""&_Il(IsNull(lhw_size) = True, uu, lhw_size & ' ') & _tr(IsNull(lhw_size_uni0 = Trug "n, lhw_size_unit & ' ") & _tr(IsNull(lhw_speed):True, "", lhw_sp€ed &" ") & _tr(tsNul(lhw_sp€ed_unit) = True, "', lhw_sp@d_unit & ' ') & _trf[hNull(lRemark) = True, "", tr(lRemark = '-', "", lRemark & ' "))

EndWithrsHardware.MoveNext

LoopElse

detailhardware ='"End If

End



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3. andForm lHardware SearchOption ExplicitDim ListAs ListltemDim rstmp As New ADODB.Recordset, rsTmphw As New ADODB.RecordsetDim rsTmpshow As New ADODB.Recordseq rsModel As New ADODB.RecordsetDim cwherel As Sfring cwhere2 As Sting, cwhere3 As String; cwhere4 As String, cwhereS As SfringDim cwhere6 As Strine.cwhereT As Strine. cwhereE As Strine. cwhere9 As Strins. cwherel0 As StrinsPrlvate Sub CBBrandName_Cliek$

If CBBrandName.lisrcount > 0 ThencuiherE2 = "'LBBrandlD.Caption = arrHw_Bmnd(CBBrandName.Listlndoq 1)

cwhere2 - n Atrd (Brand"Brand_ID)='n & LBBrandlD.Caption & n) n

Call ShowDalalnlistViewCall AddModelToComboorlistBox(CBModel, LBHwTlpe.Caption, LBBrardtD.Caption)

ElseLBBrandlD.Caption = rr"

End tfEnd SubPrivate Sub CBhwStatus_Click$

LBStatus.Caption = CBhwStatus.ListlndexEnd SubPrivate Sub CBHwType-CtickQ

LBHwTlpe.Caption = arrHw_Type(CBHwType.Listlndex + l, l)cwherel -'And ((HardWare.HW_Tpe)='n & LBHwTlpe.Capion & "') "

Call ShowDitalnlistView : Call SetobjectenableCall AddBrandToComboOrlistBox(CBBrandName, LBHwType.Caption)

End SubPrivate Sub CBIIwType_GotX'ocus$

cwherel : ttn

Call CleardaaCall ShowDatalnlistView

End SubPrivate Sub CBMhz_GotFocusQ

strSQL = "SELECT hw_speed FROM speed GROUP BY hw_speed ORDER BY hw_speed"Call AddDataToComboBox(CBMha srSQL)

End SubPrivate Sub CBMhzUnit_Clict<Q

cwhereS - n And (sped"hw_speed_unitf "'& CBMhzunit.Text & n') 'Call ShowDatalnlistView

End SubPrivate Sub CBMhzUnit_GotFocusQ

strSQL = "SELECThw_speed_unitFROM speed GROIJP BY hw_speed_unit ORDERBYhw_speed_unit"

Call AddDataToComboBox(CBMhzunit, strSQL)cwhereS = tt"

Call ShowDatalnlistViewEnd SubPrivate Sub CBMhzUnit_LostFocusQ

If Len(Trim(CBMhzunit.Text)) = 0 ThencwhereS = tt"

EIsecwhereS -'And (speed.hw_speed_unit! u'& CRMhzUnit.Text & trr) x

End IfCall ShowDatalnlistView

End SubCopyright by Mahidol University

Thanom Kanitpanyachareon Appendix C I 102

!

Y

g

Private Sub CBModelCliekSff CBModel.listcount > 0 Then

cwhetre3 ='oLBModel_tD.Caption = arrHw_Mode(CBModel.Listlndoq I )cwhere3 = n And ((Model.Model_ID)= "'& LBModel_tD.Caption & n) "Call ShowDatalnlistView

ElseLBModel-[D.CaPtion = ""

End IfEnd SubPrivate Sub CBSize_Gotf,'ocusQ

strSQL = 'SELECT hw_size FROM size GROLJP BY hw_size ORDER BY hw_sizeuCall AddDataToComboBox(CBSize, sfrSQL)

End SubPrtvate Sub CBSheUnft-CIickQ

cwhereT -'And (Gize.hw_size_unitF '' & CBSizeUniLText & n) n

Call ShowDatalnlistViewEnd SubPrivate Sub CBSizeUnlt_GotFocusQ

strSQL = 'SELECT hw_size_unit FROM size GROIJP BY hw_size_unit ORDER BYhw_size_unit"

Call AddDataToComboBox(CBSizeUnit, strSQL)cwhereT = u'

Call ShowDatalnlistViewBnd SubPrivate Sub CleandataQ

LBHwType.Captioa = "'LBModel_ID.CBption = r'rr

LBBrandID.CBption = nn

LBStatus.Caption = I'n

CBHwTlpe.Text: ""CBModel.Text: ""t(tlVlhz.Text = ""CBMhzunitText= nn

t(6ize.Text = tttt

CBSizeUnit.Text = "nCBBrandName.Text= ""RemarkText=tt-ncwherel = un

cwhere2 = u'

cwh€re3 = "'cwhere4 = nu

cwhereS - n'

cwhere6 - uu

cwhereT = uu

cwhereS -'ncwhere9 = un

cwherel0 = "End SubPrivate Sub CBSizeUnit_LostFocusQ

If Len(Trim(CBSizeUnit.Text)) = 0 ThencwhereT = tt"

ElsecwhereT: " And ((size.hw_size_unit): "'& CBsizeunit.Text & ") "


End Sub


ffivate Sub CmdCancel_ClickQCall OpenCloseBox(False)CaIl CleardataCall ShowDahlnlistViewCBHwTlpe.Locked = False

End Subhfvate Sub CmdExit_ClickQ

UnloadMeEnd SubPrivate Sub cmdPrint-CliclQ

Dim CrystalObj As Object, AnData0 As VariantDim i As IntegerIf ListllardwareDetail.Listltems.Cout <= 0 Then Exit SubSet Crystalobj = Createobjec('CrystalDataObject.CrystalComobject')CrysalObjAddfieH "IdCode', vbStringCrystalobj Addfield'Itemu, vbSringCrystalObj.AddField nBmnd', vbSringCrystalObjAddField'Model', vbStringCrystalObj.AddField'Speed', vbSringCrystalObj AddField nSize", vbStingCrystalObj.AddField "IdCom', vbStringCrystalObj AddField'SN', vbStringCrysalObj.AddField nStatus", vbSningCrystalObj.AddField nRemark", vbStingReDim ArrData(l To ListHardwareDetail.Listltems.Count, I To l0)For i = I To ListHardwareDeAillistltems.Count

Set listl : ListllardwareDetail.Listltems(i)ArrData(i" 1) = CSr(listl.Text)AnDaE(i, 2) = CSfr(listl.Subltems( l)ArrData(i, 3) = CSr(listl.Subltems(2)ArrData(i, 4) = CSt(listl.Subltems(3)ArrData(i, 5) = CStr(listl.Subltems(4)ArrData(L 6) = CStr(listl.Subltems(5))ArrData(i, 7) = CStr(listl.Subltems(6))ArrDaa(i, 8) = CStr(listl.Subltems(7)ArrData(i, 9) = CSfr(listl.Subltems(8))ArrData(i, I 0) = CSfr(listl.Subltems(9))

NextIf CreateFieldDeffile(CrystalObj,'C:VIISNBW\data00 l.bd", True) = 0 Then

MsgBox "Failed to create Data-brt fileln, vbE:rclamationEnd tfCrystalobj AddRows ArrDataWith frmViewer.CrystalReportl

.Connect= cSting

.Destination = crptToWindow

.DiscardSavedDah = False

.setTablePrivateData 0, 3, crystalobj

.ReportFileName = App.Path &'\report\rrmrunrrdumrqrJnrei.rpt"

. WindowState = crptlvlaximized

.WindowParentllandle = frmViewer.hWnd

.Action = IEnd With

End SubPrivate Sub Form_ActivateQ

Me.WindowState = 2End Sub

Fac. of Grad- Studies, Mahidol Univ. M.Sc. (Tech. of Inform. Sys. Manag.) / 103

t

Y


Thanom Kanitpanyachareon Appendix C I 104

Y

Private Sub Form_LoadQCallmainMe.Left=0: Me.Top:0Call CleardataCall OpenCloseBox(False)Call ShouDatalnlistViewCall AddDetailToComboOrlistBoxf,0l0>fl,1 CnHwtype, False, no)CBHwType.Removeltem (0)

End SubPrlvate Sub ShowDatalnllstViewQ

Dim rsShowData As New ADtODB.RecordsetDim c€omputsrld As SningLisElardwareDetail.Lisfltems.ClearsESQL = "SELECT HardWare.HW-ID, HardWare.HW_SN, HardWare.HW_Status,

HardWare.Computer_lD, HardWare.Model [D, HardWare.HW_Type,t{W_Tpe.HW_Type_Name, HW_T1pe.HW_T}"e_Detail, HW_T1pe.HW_Sort,Size.tlW_Size, Size.HW_Size_Unit Hardware.Remark, Speed.HlV_Speed,Speed.Hw_Speed_Unit, Model.Model Name, Model.Brand_ID,Brand.Brand_Name FROM (((((HardWare INNER JOIN HW_Tpe ONHardWare.HW_Type = HW_Tlpe.HW_Type) INNER JOIN Brand ONHW_Tpe.HW_lpe = Brand.HW_Type) INMR JOIN Model ON @rand.Brand_tD= Model.Brand_ID) AI.{D (}IardIVare.Model_ID = Model.Model_ID)) LEFT JOINSpeed ON HardWare.HW_ID = Speed.HW_ID) LEFT JOIN Size ONHardWare.HW_[D = Size.HW_tD) WHERE HardWare.HW_Status o 2 "

strSQL = strSQL & cwherel & cwhere2 & cwhere3 & cwhere4 & cwhereS & cwhere6 &cwhereT & cwhereS & cwhere9 & cwherel0

shSQL = strSQL & ' ORDER BY Hardware.hw_id'Set rsShowData : cnDB.ExecutE(strSQL)With rsShowData

IfNot (.BOF And .EOF) Then.MoveFirctDo Until.EOF

Set List = ListHardwareDetail.Listltems.Add( , Il$sNul(lhw_iQ = True, "-",!hw_id)LislSubltems(l) = tr(IsNull(lhw_type name) = True, "-", lhw_type_name)LisfSubltems(2) = tr(IsNull(lbrand_name) : True, "-", lbrand_name)List.Subltems(3) = tr(IsNull(lmodel :name) = True, "-", lmodel nane)LisfSubltems(4) = Il(IsNul(lhw_speed) = True, "-", lhw_speed)List.Subltems(4) = Il(IsNul(lhw_speed_unit) = True, "-", [(lhw_speed_unit o"-", ListSubltems(4) & " " & lhw_speed_uniq ListSubltems(4))List.Subltems(5) = tr(IsNul(lhw_size) = True, '-u, il(lhw_size = 0, n-",

!hw_size)List Subltems(S) = tr(IsNul(lhw_size_unit) = True, u-u, [(lhw_size_unit c> 'r-rr,

List.Subttems(5) &'' & lhw_size_unig LisrSubltems(5))LisrSubltems(6): tr(IsNull(lComputer_ID) = True, "-", [(!Computer_[D = 0, "-", lComputer_ID))' List.Subltems(7) = tr(IsNul(lhw-sn) = True, u-n, ffilhw-sn:0, "-n, !hw-sn)Listsubltems(8) = tr(tsNul(lhw_status) = True, "-", Il(lhw_status = 0, 'ilR6",

Il(lhw_status = l, "frqn"n tr(lhw_status = 2, "ldnrchild", "dldou"))))List Subltems(9) = Il(IsNull(lRemark) = True, "-", lRemark).MoveNext

LoopEnd If.Close

End With Copyright by Mahidol University


Private Sub AddDahToComboBox@yVal ctrlObject As ComboBox, ByVal cSQL As Stning)ctrlObjectClearSet rsHW : cnDB.Execute(cSQl)WithnHW

IfNot (.BOF And .EOF) Then.MoveFirstDo Until.EOF

ctrlObject.Addltem .Fields(0).MoveNext

LoopEnd If

End WithEnd SubPrtvate Sub OpenCloseBox@yRef EnFlag As Boolean)

CBHwTlpe.Enabled = TrueCBModel.Enabled = EnFlagbftItlhz.Enabled = FalseCBMhzunitEnabled = Falsetr6ize.Enabled = FalseCBSizeUnit.Enabled = FalseRemadcEnabled = EnFlagLabell l.Enabled = FalseLabel l2.Enabled = FalseLabeDl.Enabled = FalseLabel22.Enabled = FalseIabell l.F.nabld = EnFlagtru5sls.F.nabled = EnFlagLab€lT.Enabled = EnFlagCBBrandName.F.n ablsd = EnFlag

End SubSub SetobjectenableQ

If LBHwType.Caption = " Then Exit SubstSQL = "SELECT * FROM Hw_Debil Where HW_lype ='" & LBHwType & ""'Set rstup : cnDB.Execute(sfSQl)Call OpenCloseBox(True)Ifrsmp.Fields(l) = I Then

tsttlVlhzF.nabled = True : CBMhzUnirEnabled: TrueLabell l.Enabled = True : Labell2.Enabled: True

End IfIf rsmp.Fields(2)

= I Then

bdSize.Enabled = TrueCBsizeunit.F.nabled = TrueLabeDl.Enabled = Truel.a.beD,z.En bled = True

End IfEnd SubPrivate Sub Remark_ChangeQ

cwheret -'And (hardware.remark) like'%'& Remark.Text & "o/o') 'Call ShowDatalnlistView

End SubPrivate Sub Remark_LostFocusQ

cwhereS = un

If Len([email protected]) o 0 ThencwhereS = " And ((hardware.remark) like'7o" & RemarkText &"yS)"

Etrd IfCall ShowDatalnlistView

End SubCopyright by Mahidol University

Thanom Kanipanyachareon Appendix C / 106

v

Private Sub Remark_GotFocusQSet rsModel = coDB.Execute("Select * From Model Where Model_ID ='n &

LBModel_ID.Caption & n'n)

If rsModel.RecordCouut > 0 ThenRemrk.Text = rsModellmodel_detail

End IfCall HilightText(Remark)

End SubPrivate Sub ffiMhz ,GotFocusQ

Call HilightText(bdNdhz)End SubPrivate Sub txtMhz_KeyPress(KeyAscii As Integer)

IfKeyAscii: 13 Thencwhere4 = nu

If Len(Trim(txtMhzText)) o0 Thencwhere4 -'And (speed.hw_speed)= n g brtlVthz.Text & ") "


End IfEnd SubPrivate Sub txtMhz_LostF ocusQ

curhgre4 = t'If Len(Trim(brtlt{hz.Text)) o 0 Then

cwhere4 - ' And (speed.hw_speed)= tt * BtIVIhzText & ") "End IfCall ShowDaUlnlistView

End SubPrivate Sub ffiSerialNo_Gottr'ocusQ

Call HililhtText(EaSerialNo)End SubPrivate Sub ffi ize-Gottr'ocus$

Cdl HilightText(bfiSize)End SubPrivate Sub trtSize_KeyPress(KeyAscii As Integer)

IfKeyAscii = 13 Thencrvhere6 = nn

If f,en(Trim(b<tSize.Text) o 0 Thencwhere6 = " And ((size.hw_size): u & trtSize.Text & u) u


End tfEnd SubPrivate Sub txtSize_LostFocusQ

cwhetre6 = "t'If Len(Trim(OrtSize.Text) o 0 Then

cwhere6 = " And (size.hw_sizef " & trtSize.Text & ")'rnrirCall ShowDaalnlistView

End Sub


Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of tnform. Sp. Manag.) / 107

APPENDIX I)

QTIESTTONNATR



urirss'ru 61s'r no Nfi c lnafqrfi rC ec ogizsas

Appendix D / 108

ilunn

{ud a fiurnr.r zsas

rCcs mdunrunfrdomumufrorynilrynaunrniT ivrarfifiuf

d.rddundes drnruilrynaunrnfrumuni

rliau ffirurunmqudrvrntutnfinls6ur?rfiRoNfi'rrnaf

nffiatil u'letnuou nrriiorflrgrgTre?rg druurJ.r arqred:levirshmitrnotfirrnofqrfiq nuv

mnrgnrnn$uavuiureqrfin insrdflIflun lfidns,rrislurdur.llrgrgTlvr nrrrimryrnlulndnrr{rrn,re

,vuust'ltfiutvrrt nzusrtrnraufirs{nf ilurirerdeufinn lfrrnuorlcffoivra'tfiy{uf#l ryuud,lmurnfl

q:Jnminoufitnsfrfianrr{nnT a nnfiflntnivrflrdslflun d.r'lufunounrer-mutyuuqvfioq?i1n1mrru

mderynrdarirtrJldl,unr:Qtrrervifiunrssnuuuevuuluri rdotilfiurddoryndnr.:fluncrrufiornrmor{

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, [?m 10.00 u.

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z. fiuqoulun, t{nnlrnoilfi ? Maf un;qrjnrnfnaufi tnof ulafi nrafu r{ruT turi

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4. fiunoulunT xfu dou naufi I uaf unrqrJnrnlnalfi n uafs. yltr{r1uoi'Ilr

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6. funounrmufl Nfraqnnoufi r mof un; qr.lnmfnaxfi Q rnof rfi s{nrirnsmurfi of r mua

m0ryuflr1?

I

I


Thanom Kanitpanyachareon Appendix E/ 110

APPENDD( E

ORGAINIZATION CIIART


Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Tech. of Inform. Sys. Manag.)/ 111

$s

GFql

lrj4lWrOIFe

'E

E

EEsEsFt

Figure E.1 Organization Chart of Yonok CollegeCopyright by Mahidol University

Ihanom lftniPanyachareon

NAME

DATE OFBIRTH

PLACE OF BIRTH

INSTITUTIONS ATTEI\DEI)

HOME.ADDRESS

BIOGRAPITY

Biogrqhy / tt2

Mr. Thanom Kanipanyachareon

5 June 1972

Lampang, Thailand

Yonok College, 1990-1994

Bachelor of Business AdminisEation

@usiness Computer)

Mahidol University, 1997 -2002

Master of Science

(Technology of Information System

Management)

563 M.7 Lampang-Maeta Rd.

Tumbon. Itabaht Amphor. Muang

Lampang 52000

K9,


computer hardware information system management...

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