Physical PlantCampus Services Department

Final Project Presentation12/07/07

Team 3Audrey F. | Charles K. | Fred Z. | Kenneth L. | Sam L. | Sara S. | Stanley K.

Overview

• Company Background• Project Purpose• EER Diagram• Relational Schema• Relation Normalization• Database Queries

Company Background• The University of California Physical Plant Campus Services Department

(PPCS) maintains the University of California Berkeley’s campus facilities, utilities, and resources

• PPCS is responsible for taking maintenance, repair, and emergency service calls from UC Building Coordinators and Capital Projects Managers

• A Customer Service Representative at PPCS receives maintenance requests and coordinates workers to inspect and resolve reported issues

• Before any maintenance work can be done, PPCS workers must disable any affected utilities such as water, steam, or electricity at the location through a process known as a shutdown

Project Purpose

• Create a database that will accurately represent the PPCS shutdown process

• Coordinate information used by all parties involved in the shutdown process

• Explore data relationships to identify areas of inefficiency in the shutdown process

EER Diagram

Relational Schema1. Person (SSN, First_Name, Last_Name, Office_Address,

Email, Phone, Fax, Position)i. Contractor (SSN4, SuperIntendentName, ProcessInvolvement,

CapitalProjects)a) Electrical (SSN4, TechnicianLevel, TechnicianType, TestsExpertise)b) Elevator (SSN4, AreaSupervised, CertificationLevel)c) Utility (SSN4, UtilityType)d) Plumbing_Machinary (SSN4, PlumberType, EmergencyCapable)e) Lock Shop (SSN4, ServiceType, SpecialAssistance)f) Structural (SSN4 , ServiceGroups, Licensure)g) Ventilation (SSN4, ModelExpertise, ModelExperienced,

DateofLastMaintainence, MechanicType, Scale)h) Stationary (SSN4, CertificationLevel)

WO IsEmergencySD

CSR Date_Recorded Comments

FD1

FD2

Partial Dependency violates 2NF

Normalization

ProcessForm1

ProcessForm2

FD3

FD4

WO IsEmergency SD CSR Date_Recorded

IsEmergencySD Comments

Normalization Analysis 2NF

FD1FD2

Transitive Dependency violates 3NF

Normalization

Location1

Location2

FD3

FD4

LID Contact_No RoomNo Name AddressLocation_Type

Zip-code Type3

LID Contact_No Room No Name Address Zip Code

Location_Type Type3

Normalization Analysis 3NF

MS Access Queries

1) Shutdown Statistics2) Craftspeople Contacted3) Building Age Correlation4) Process Time of Forms

Monthly Shutdown Statistics

Query:Find the frequency and proportion of each type of shutdown occurring over a given month.

Purpose:PPCS can better allocate its workers and resources to efficiently complete the most frequently requested shutdown types.

Monthly Shutdown Statistics SQL>SELECT [Shutdown Request Subclass].Type, [Shutdown Request

Subclass].Date_Recorded, Count([Shutdown Request Subclass].WO_No) AS CountOfWO_No

FROM [Shutdown Request Subclass]GROUP BY [Shutdown Request Subclass].Type, [Shutdown

Request Subclass].Date_RecordedHAVING ((Shutdown Request Subclass].Date_Recorded)=[Month]);

SELECT [Query 1A].Type, [Query 1A].Date_Recorded AS [Month], [Query 1A].CountOfWO_No AS Frequency,

[CountOfWO_No]/[SumOfCountOfWO_No] AS Proportion

FROM [Query 1A], [Query 1B]GROUP BY [Query 1A].Type, [Query 1A].Date_Recorded, [Query

1A].CountOfWO_No, [CountOfWO_No]/[SumOfCountOfWO_No], [Query 1B].SumOfCountOfWO_No;

Monthly Shutdown Statistics 1 Type the year 2 Type the month

Craftspeople Contacted

Query:List the names of all craftspeople contacted previously for a specified shutdown.

Purpose:PPCS can identify the most experienced workers for each type of shutdown.

Craftspeople ContactedSQL>SELECT [Verification Subclass].[Lead Craft EID], [Verification

Subclass].[Assist Craft], [Verification Subclass].[PhoneNumber], Count([Verification Subclass].[Assist Craft]) AS [CountOfAssist Craft]

FROM [Verification Subclass]GROUP BY [Verification Subclass].[Assist Craft];

Craftspeople Contacted1 Type shutdown name

Building Age Correlation

Query:Calculate the correlation coefficient between the age of a specified building and the number of shutdowns.

Purpose:PPCS can identify buildings that are particularly problematic due to building age and may require extra maintenance.

Building Age Correlation

SQL>SELECT DISTINCT S.LID, L.Age, Shutdown_per_LID,

(COUNT(DISTINCT S.LID)*SUM(Shutdown_per_LID * L.Age)-SUM(Shutdown_per_LID)*SUM(L.Age))/(SQRT(COUNT(DISTINCT

S.LID)*SUM(SQUARE(Shutdown_per_LID))-SQUARE(SUM(Shutdown_per_LID)))*

SQRT(COUNT(DISTINCT S.LID)*SUM(SQUARE(L.Age))-SQUARE(SUM(L.Age))))

AS DISTINCT CorrelationFROM Shutdown S, Location LWHERE EXISTS

(SELECT COUNT(*) AS Shutdown_per_LIDFROM Shutdown S, Location LWHERE S.LID = L.LIDGROUP BY S.LID);

Building Age Correlation

1 Type full or partial location name

OR

Process Time of Forms

Query:Calculate the mean and variance for the time elapsed between a shutdown request and a shutdown completion over a specified month.

Purpose:PPCS can identify bottlenecks in the shutdown process.

Process time of formsSQL>SELECT ProcessForm.WO_No, ProcessForm.CSR,

ProcessForm.Date_Recorded, ProcessForm.Comments, ProcessForm.Is_Emergency_SD, ShutdownRequest.Request_Date, Completion.Completion_Date, [Completion_Date]-[Request_Date] AS Date_Difference, ShutdownRequest.Type

FROM (ProcessForm INNER JOIN Completion ON ProcessForm.WO_No = Completion.WO) INNER JOIN

ShutdownRequest ON ProcessForm.WO_No = ShutdownRequest.WO;

SELECT Avg([Query 4A].Date_Difference) AS Mean, Var([Query 4A].Date_Difference) AS Variance, [Query 4A].Type

FROM [Query 4A]GROUP BY [Query 4A].Type;

Process Time of Forms1 Type the year 2 Type the month

Questions?

Special thanks to Keith Muller and Shaylah Rigmaiden!