ms acess

7/30/2019 Ms Acess

1/24

MS AccessIntroduction

7/30/2019 Ms Acess

2/24

Marina G. Erechtchoukova 2

MS AccessRelational data model

Data is stored in tables incorporated into

database files with extension mdb oraccdb

Standard Windows interface

Standard Help systemPart of MS Office suite

7/30/2019 Ms Acess

3/24


Access Database ObjectsTables contain rows called records andcolumns called fields.

Queries are requests for specificinformation from a database.

Queries are virtual tables built on a

given SQL statement

7/30/2019 Ms Acess

4/24


Access Database Objects

(cont. )Forms are parts of user interface. Formsare used to enter, edit or browse data

from a database

Reports present requested information

and allow to create hard copies.

7/30/2019 Ms Acess

5/24


Data TypesText

Memo

NumbersByte

Integer

Long integer

SingleDouble

Date/time

Currency

AutoNumber

Yes/NoYes/no

True/False

1/0

OLE ObjectsHyperlink

Lookup Wizard

7/30/2019 Ms Acess

6/24


Create a Database in MS Access

2007 and up

Click on the round Office button

Choose Newfrom the drop-downmenu

In Create Blank Database window

specify the database nameClick Create

7/30/2019 Ms Acess

7/24Marina G. Erechtchoukova 7

Create TableUsing Wizard

Design View

Specify field names

Data types

Properties

Determine a primary key

Save the table

7/30/2019 Ms Acess


Access Tables

Design view

Table structure is created and may be edited

Datasheet view

Display table content in spreadsheet-like grid,

Used for entering, editing or deleting data

from tables

7/30/2019 Ms Acess


Referential Integrity

ConstraintsReferential Integrity

Can be established or removed in Relationshipwindow

In MS Access 1995-2003 open menu Toolsand chooseRelationshipsfrom the drop-down menu

In MS Access 2007 and up choose Database Toolstab and then Relationships

Use drag-and-drop features and select EnforceReferential Integrityoption

Tip specify referential integrity constraints beforedata is entered

7/30/2019 Ms Acess


QueriesSpecify the source of data

If multiple tables are used, specify

relationships between tables

Select desirable fields from the table(s)and options related to the fields

Specify a criterion

7/30/2019 Ms Acess


Query CriteriaTo be selected a record must satisfy acriterion

Expressions may contain the followingoperators:

Math Operators

Relational operators

Boolean Operators

String Operators

Miscellaneous Operators

7/30/2019 Ms Acess


Math Operators+ Addition

- Subtraction

* Multiplication/ Division

\ Integer Division

^ ExponentiationMod Modulo (remainder) division

7/30/2019 Ms Acess


Relational Operators= Equal

Not equal< Less than

> Greater than

= Greater than or equal to

7/30/2019 Ms Acess


Boolean OperatorAnd Logical And Both operands are true

Or Logical Or Either one of the

operands or both of

them are true

Xor Excusive Or Only one of the

operands (not both ofthem) are true

Not Negation Operand is not true

7/30/2019 Ms Acess


String and Miscellaneous

Operators& Concatenation

Like Similar to

Betweenand

Between 2 values inclusive

In (list) One from the listIs Null True if the field is empty

7/30/2019 Ms Acess


Access FormsCreate using Form Wizard

Create using Form Design view

Specify source of data will be presented bythe form

Table

QuerySpecify fields related to the form

Add labels, titles, graphics and so on

7/30/2019 Ms Acess


Form Design viewForm Headera place for titles,graphics, additional information

Form Details section the fields used tocreate a form and control elementsrelated to the fields

Form footera place for any itemswhich will appear at the bottom of theform

7/30/2019 Ms Acess

18/24


Form ControlsMust be bound with fields from thesource table or query

Contain data from correspondent fields,labels or other controls (like command

button) or another form called subform

7/30/2019 Ms Acess

19/24


Viewing FormsOpen database

Click Forms tab to display all available

forms in the databaseSelect the form

Select Open

To view data use Form NavigationTools. To prevent data Editing, useLocked Property for the Text Boxes

7/30/2019 Ms Acess

20/24


Creating SubformsRepresent 1:N relationships

To add a subform to a form

Create a form that will be a subformClick on Subform/Subreport button andthen click on a form where the subformshould appear

Specify the source for the subform

Specify the fields to link the form andsubform

7/30/2019 Ms Acess

21/24


ReportsReports present table contents or queryresults in an easily assimilated format

Reports have Design view and PrintPreview

Report Design View is similar to the

Form Design view

7/30/2019 Ms Acess

22/24


Report Design ViewPage Header contains data and graphicsappearing at the top of each page

Report Header contains the data and graphicsappearing at the top of the first report page

Detailed section contains data from tables orqueries

Page Footer contains the data and graphics

appearing at the bottom of every pageReport Footer contains the data and graphicsappearing at the bottom of the last reportpage

7/30/2019 Ms Acess

23/24


Report TypesColumnar reports a single record on apage

Tabular reports datasheets: fieldsfrom the tables are presented ascolumns

Justified reports combine two previoustypes of the reports

7/30/2019 Ms Acess

24/24

M i G E ht h k 24

Creating ReportsWith a Wizard

Design view:

Specify source for the report

Select Fields from the Fields List

Add labels

Add format

Switch the view to see the result.

ms acess

Documents