ISOM221+Lecture+6+-+Process+Modeling+I+Solutions

ISOM221+Lecture+6+-+Process+Modeling+I+Solutions - ISOM221...

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ISOM221 Information Systems Analysis and Design Lecture 6: Process Modeling I (Solutions of In-Class Exercises) 1 Exercise #1 Work backward to create the context diagram for the supermarket checkout example. Hints What is the process (process 0)? What are the external entities? What are the major data flows to/from the external entities?
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Supermarket Checkout (This is a Level 1 diagram) Solution Customer 0 Item UPC Total Due 0 Checkout System Payment Clearinghouse Purchase Receipt Payment Validation Payment Authorization Payment Details
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Exercise #2 Draw a context diagram for the following housing system. The Campus Housing Office is designing a housing system to help students find apartments. Owners of apartments fill in information forms about the rental units they have available (e.g., location, number of bedrooms, monthly available (e.g., location, number of bedrooms, monthly rent), which are entered into a database. Students can search through this database via the Web to find
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ISOM221+Lecture+6+-+Process+Modeling+I+Solutions - ISOM221...

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