Database Development (Level 8) Database Development (COMP08002) Coursework using an Extended...

Database Development (Level 8)

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Database Development (COMP08002)

Coursework using an

Extended Database Design for Stream2U Case Study

This document describes what you (and your group) are required to do to for the Database

Development coursework (worth 50%). The coursework is based on an extended version of

the Stream2U database.

Some of the information describing the extension to the Stream2U database is given here and

it is part of your assessment to add the missing information and build the extended database.

On page 2 of this document you should add the requested details and then follow Tasks 1 to

8 shown (boxed) throughout this document.

Before submitting this document - delete this page so that Page 2 becomes the front page of

your coursework.


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Database Development (COMP08002)

Coursework for Stream2U Case Study (Extended)

Enter details of group members

Student Name(s) BannerID(s)

Enter details for group database

Database Name Location?

(UWS Server/Student Laptop)

Enter details of your lecture and campus

Lecture Name Your Campus?

(Ayr, Dumfries, Hamilton or Paisley)


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1. ER model for Stream2U

[Assumptions – An actor can play only one character in a given film. A film is directed by a maximum of two

directors.]

Member

memberID {PK} firstName lastName dob gender dateJoined eMail /daysSinceJoin /fullName

Stream

streamID {PK} memberRating requestView startView freeStream /requestToStart

Film

filmID {PK} title genre [1..*] classification rentalCharge

Requestses

Delivers

1..* 1..* 1..1 1..1

ActorFilm

actorFilmID {PK} character voiceOnly

Actor

actorID {PK} firstName lastName dob gender nationality /fullName

Includes

0..*

1..1

Performs

1..1

0..*

Director

directorID {PK} firstName lastName gender nationality /fullName

1..*

1..2 deviceAddDate

Directs

Has

1..*

0..*

MembershipType

mTypeID {PK} mTypeName minFilmsStream mBenefit

Describes

Device

deviceTypeID {PK} deviceType deviceModel deviceMake

1..1

1..*

Examine the extended version

of the ER model for the

Stream2U database.


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2. Relational Schema for Stream2U Database

tblMembershipType (mTypeID, mTypeName, minFilmsStream, mBenefit)

Primary Key mTypeID

tblMember (memberID, firstName, lastName, dob, gender, dateJoined, fullName,

mTypeID)

Primary Key memberID

Foreign Key mTypeID references tblMembershipType(mTypeID)

Calculated fullName

tblStream (streamID, memberID, filmID, memberRating, requestView, startView,

requestToStart)

Primary Key streamID

Calculated requestToStart

Foreign Key memberID references tblMember(memberID)

Foreign Key filmID references tblFilm(filmID)

tblFilm (filmID, title, genre, classification, rentalCharge)

Primary Key filmID

Update the relational schema to match the extended ER model

for Stream2U. For relations with foreign key(s), add

appropriate UPDATE and DELETE rules. Give at least one

example that uses: NO ACTION, CASCADE, SET NULL, SET DEFAULT


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3. Data Dictionary for Stream2U Database

The MembershipType Table

Column Name Meaning Data Type Nulls PK / FK Default

Value

Constraint /Column Property

mTypeID Unique identifier of type

tinyint No Yes

mTypeName Name of membership

type

nvarchar(8) No ‘Bronze’ Only values ‘Bronze’, ‘Silver’,

‘Gold’, ‘Platinum’

minFilmsStream Minimal number of films

streamed to qualify

smallint No

mBenefit Describes the benefit

achieved on streaming

more than a minimum

number of films

nvarchar(100) No

The tblMember table

Column Name Meaning Data Type Nulls PK / FK Default

Value


memberID Uniquely identifies

each member

int No PK Set identity specification seed as 1

and increment as 1.

firstName First name of member nvarchar (30) No

lastname Last name of member nvarchar (30) No

dob Date of birth of

member

date No

gender Gender of member nchar(1) Yes ‘F’ Only hold ‘F’ or ‘M’ (Constraint )

dateJoined Date member joined date No getDate()

fullName Displays first and last

name of member

together.

Yes Use RTRIM (Calculated) and

persistent storage.

Update the data dictionary to match the extended Stream2U

relational schema. Ensure for each column that you describe

the meaning of the column; identify an appropriate data

type; specify whether nulls are allowed; identify any

special role played (i.e. PK, PPK or FK); any default value

and finally any appropriate constraint or property

associated with the column. [PPK means partial primary key]


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The tblFilm table

Field Name Meaning Data Type Nulls PK / FK Default

Value


filmID Uniquely identifies each

film

int No PK Set identity specification seed as

101 and increment as 1.

title Title of film nvarchar

(50)

No

genre Genre of film Only hold: Only hold: ‘Action’,

‘Adult’, ‘Children’, ‘Comedy’,

‘Horror’, ‘Romance’ or ‘Sci-Fi’

classification British Board classification

of film

nvarchar (3) No 12A Only hold: ‘U’, ‘PG’, ‘12A’,

‘15’ or ‘18’

rentalCharge Price to rent film money No 3.00 Only hold between 1.00 and

10.00

The tblStream Table

Field Name Meaning Data Type Nulls PK /

FK

Default

Value

Add Constraint/Column Property

streamID Uniquely identifies each

request to stream a film.

int No PK Set identity specification seed as 1001

and increment as 1.

memberID Identifies member requesting

film.

int No FK

filmID Identifies film to be streamed. int No FK

memberRating Member’s rating of film from

0.5 star (very poor) to 10 stars

(brilliant).

numeric(3,1) Yes 5 Only values 0.5 to 10.0 (Constraint).

requestView Date and time that member

made request.

datetime No getDate()

startView Date and time that member

started to view film.

datetime No

requestToStart Time (in seconds) between

member’s request to rent

(stream) film and member

starting to watch film.

No Use DATEDIFF() function and

persistent storage.

4. Build the Stream2Udatabase

The Stream2U Database (Diagram shown using Standard Mode)

Update your database to match the description of each table

given in your data dictionary. Create a database diagram of

your extended Stream2U database and replace the diagrams

shown below with your diagrams.

Tip! To copy your diagram to this document - right-click

any blank space in your diagram to see ‘Copy to Clipboard’

option and to change the view of your tables - right-click

on any table to see Table View options.


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The Stream2U Database (shown in Table View – Standard) – Replace diagram with

your Extended Version

The Stream2U Database (shown in Table View – Column Names) – Replace diagram

with your Extended Version

tblMember

memberID int

firstName nvarchar(30)

lastName nvarchar(30)

dob date

gender nchar(1)

dateJoined date

fullName

mTypeID tinyint

Column Na... Data Type Allow Nulls

tblFilm

filmID int

title nchar(50)

genre nchar(8)

certification nchar(3)

rentalCharge money

Column Name Data Type Allow Nulls

tblMembershipType

mTypeID tinyint

mTypeName nvarchar(8)

minFilmsStream smallint

mBenefit nvarchar(100)


tblStream

streamID int

memberID int

filmID int

memberRating numeric(3, 1)

requestView datetime

startView datetime

requestToStart int


Requests Deliv ers

Describes

tblMember *

memberID

firstName

lastName

dob

gender

dateJoined

fullName

mTypeID

tblFilm

filmID

title

genre

certification

rentalCharge

tblMembershipType *

mTypeID

mTypeName

minFilmsStream

mBenefit

tblStream

streamID

memberID

filmID

memberRating

requestView

startView

requestToStart

Requests Deliv ers

Describes


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5. Add Records into the Stream2Udatabase

6. Querying your Stream2U database

Ensure that you have the following number of records in

each table and take care to remember to insert values for

any new column(s) in existing tables.

tblMembershipType – 4 records

tblMember – 3 records

tblStream – 20 records

tblFilm – 10 records

tblFilmGenre – 20 records (each film must have at least 1

genre)

tblDirector – 5-10 records(depends on your selection of

films)

tblActor – 5-10 (depends on your selection of films)

tblActorFilm – 20 records

tblDevice – 5 records

tblMemberDevice – 10 records (each member must have at

least 1 device)

tblFilm – 10 records

Create 10 SQL queries and present the SQL code and output

here. Your queries should include the following:

1 CREATE TABLE statement (for one of your new tables)

1 INSERT statement (to insert record(s) into one of your new

tables)

4 SELECT queries (by adapting examples in Practical 4)

4 SELECT queries (by adapting examples in Practical 5)

For each of the 8 queries – State what the query does and

explain why it is useful for Stream2U. Your choice of SQL

examples should demonstrate your understanding of SQL.

Present each of your queries using the format shown below.


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Action: Selects all columns and all records from the tblFilm table.

Purpose: This query displays all details of Stream2U’s films and would be useful for

members browsing through the available list for ideas.

Select * -- Selects all columns and all records of the tblFilm table From tblFilm;

7. Appendix - Your Completed (and signed off) Tasks 1-4

8. Coursework Marking Scheme

Section Marks (Out of 100)

Relational Schema 20

Data Dictionary 20

Create Database 30

Insert Records 10

SQL Statements 20

Appendix (Lab Tasks 1-4) Signed off Required for a member to receive

coursework mark

Print out this document and append to the back, the signed-

off practical tasks 1-4 for each member of your group.


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9. Submit Your Coursework

Submit a hardcopy of your coursework report that includes

all of the sections detailed above to the School of

Computing Student Office (E217) on or before 4.00pm on

Thursday of Week 11.

A softcopy of your coursework report (minus Appendix) should

be uploaded to Moodle as a backup.

Please note that Database Development students at other UWS

campuses should follow the submission instructions issued by

your lecturer.


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10. Summary of your Coursework Marks & Feedback

(Please include this page in your submission).

Section Marks

(Out of 100)

Your Marks Your Grade

(E, D, C, B2, B1 or A)

Relational Schema 20

Feedback (Summary)

Data Dictionary 20

Feedback (Summary)

Create Database 30

Feedback (Summary)

Insert Records 10

Feedback (Summary)

SQL Statements 20

Feedback (Summary)

Totals 100

Appendix

(Lab Tasks 1-4)

Signed off

Required for a

member to receive

coursework mark

List members of

the group below

Tasks 1-4 Present?

(Enter Yes or No)

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