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Assignment No. 01
Semester Spring 2010
Database Management Systems-CS403

 

Total Marks: 20 (5+15)

 

Due Date: 29/04/2010

 

Objective:

To learn and understand basic concepts of different levels of Data Flow Diagrams (DFD’s).

Instructions:

Please read the following instructions carefully before solving & submitting assignment:

Assignment should be in your own wordings not copied from net, handouts or books.

It should be clear that your assignment will not get any credit (zero marks) if:

 

o        The assignment is submitted after due date.

o        The submitted assignment does not open or file corrupt.

o        The assignment is copied (from other student or copy from handouts or internet).

o        Student ID is not mentioned in the assignment File or name of file is other than student ID.

 

For any query about the assignment, contact at cs403@vu.edu.pk

 

GOOD LUCK

 

 

 

Q. Draw a Context as well as Level 0 Data Flow Diagram (DFD) of any Food Ordering System.

Guidelines / Requirements:

The context level diagram must contain a major process and external entities like CUSTOMER, KITCHEN and RESTAURANT MANAGER.

Level 0 diagram must consist of major functions like capturing data, maintaining data (data stores), producing and distributing data to different processes and should work as follows:

Ø      When a Customer Places an order, System should Receive and Transform customer order (Customer Order should be processed) can be labeled as process 1.

Ø      Then there should be four streams, or flows of data. (i) the food order is transmitted to the kitchen (ii) the customer order is transformed into a list of goods sold (iii) the customer order is transformed into inventory data, and (iv) the process generates a receipt for the customer.  

 

Purposes:

Ensure that you can analyze existing manual system and can draw Data Flow Diagrams of any proposed system.

 

 

Before Starting you should study and understand:

              Rules for drawing DFDs.

              Differentiate different levels of DFDs.

 

Upload Instructions:

Please view the document related to assignment submission process provided to you by the Virtual University to upload the assignment.

 

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