Jun 21st, 2015
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The University of Texas School of Health Professions
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Case Study: Real Estate Multiple Listing Service SystemBeginning the Analysis: Investigating and Modelling System Requirements1. To what events must the multiple listing service system respond? Create a complete event table listing the event, trigger, source, use case, response, and destination for each event. List of events and resulting use cases with explanations:1.Event: Real estate office submits new listing.Use case: Add new listing.The event is the real estate office sending in the information after the agent signs the listing. 2.Event: Agent requests listing information.Use case: Provide listing information.This is the query facility where the agent can get listing information that meets search criteria.3.Event: Time to produce multiple listing book.Use case: Produce multiple listing books.This is a temporal event triggered twice a month, resulting in the multiple listing book being sent to the real estate agents. Note the book does not have to be printed on paper, so this can remain a logical model. The class might debate this, though. 4.Event: Real estate office submits listing change request.Use case: Record listing change.This represents changes in the listings to correct errors, update terms such as price, and mark the status of a listing when it is under contract, sold, or withdrawn. 5 & 6.There really should be two additional events and resulting use cases, although they were not explicitly stated in the case.

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