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Assignment No. 01
Total Marks: 20 (5+15)
Due Date: 29/04/2010
To learn and understand basic concepts of different levels of Data Flow Diagrams (DFD’s).
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Assignment should be in your own wordings not copied from net, handouts or books.
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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.
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.
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