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ISOM221+Lecture+7+-+Process+Modeling+II+Solutions

ISOM221+Lecture+7+-+Process+Modeling+II+Solutions - ISOM221...

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ISOM221 Information Systems Analysis and Design Lecture 7: Process Modeling II (Solutions of In-Class Exercises) 1 Exercise #1 Task: Construct a level-0 diagram for the following scenario Scenario: 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 rent), which are entered into a database. Students can search through this database via the Web to find apartments that meet their needs (e.g., a two-bedroom apartment for $800 or less per month within ½ mile of campus). They then contact the apartment owners directly via telephone to arrange a time to see the apartment and possibly rent it. Apartment owners call the service to delete their listing when they have rented their apartments. 2
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Context Diagram (Lecture 6) Student 0 Search Criteria 0 Campus Housing System Apartment Owner Search Results Apartment Information 3 Steps Find out the major requirements related to students and apartment owners Convert each major requirement into one DFD fragment Number the process and change its name into verb phrase Add data flows to show use of data stores as sources and destinations of data Combine DFD fragments into a level-0 diagram 4
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