DATA FLOW DIAGRAMS CIS1107/1207

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A BASIC DFD FOR A UNIVERSITY COURSE REGISTRATION SYSTEM[1/5]

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Level 0 (Context Diagram)

A BASIC DFD FOR A UNIVERSITY COURSE REGISTRATION SYSTEM [2/5]

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Level 1

A BASIC DFD FOR A UNIVERSITY COURSE REGISTRATION SYSTEM [3/5]

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Level 2

A BASIC DFD FOR A UNIVERSITY COURSE REGISTRATION SYSTEM [4/5]

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Level 2

A BASIC DFD FOR A UNIVERSITY COURSE REGISTRATION SYSTEM [5/5]

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Process ApplicationValidate Inputted

Details

University Course Registration SystemSuper Imposed

EXAMPLE (TAKEN FROM 2005 PAST PAPER)

Draw up a DFD of a very simple Maltese car number plate registration system storing registered number plates on a database. Your system should offer the following functionality: Register (add) a number Retire (delete) a previously registered number Check number for validity Check numbers for uniqueness against a database

of assigned numbers Confirm valid registration

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You should decompose your DFDs to whatever level you deem necessary to produce PSPECs in any form of pseudo code you wish. All PSPECs must be shown.

EXAMPLE (TAKEN FROM 2005 PAST PAPER)

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Level 0 (Context Diagram)

Car OwnerTransport Authority

Car Registration System

New car number

Old car number

Registration details

Registration confirmation

Registration Denial

Deletion notification

Registration notification

Deletion confirmation

EXAMPLE (TAKEN FROM 2005 PAST PAPER)

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Register car

Delete car

Car OwnerTransport Authority

New car number

Registration details

Old car number

Registration confirmation

Deletion confirmation

Deletion notification

Registration notification

Registration denial

Level 1

EXAMPLE (TAKEN FROM 2005 PAST PAPER)

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Level 2

Update car database

Car DBGenerate registration,

confirmation and notificationCar

det

ails

ackNew car number

Registration details

Registration notification

Registration confirmation

Car details

Register Car

EXAMPLE (TAKEN FROM 2005 PAST PAPER)

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Level 2

Delete Car

Compare car number with

databaseCar DB

Car number

Old car number

Delete Car record

ack (With Record number)

Record number

(Query) Record number

Generate deletion, confirmation and

notificationCar Record

Deletion notification

Deletion confirmation