Create a physical level 0 DFD for the following, and compare it with the logical model that you created in Chapter 5: A Real Estate Inc. (AREI) sells houses. People who want to sell their houses sign a contract with AREI and provide information on the house. This information is kept in a database by AREI, and a subset of this information is sent to the citywide multiple listing service used by all real estate agents. AREI works with two types of potential buyers. Some buyers have an interest in one specific house. In this case, AREI prints information from its database, which the real estate agent uses to help show the house to the buyer (a process beyond the scope of the system to be modeled). Other buyers seek AREI's advice in finding a house that meets their needs. In this case, buyers complete a buyer information form. Information from it is entered into a buyer database, and AREI real estate agents use its information to search AREI's database and the multiple listing service for houses that meet their needs. The results of these searches are printed and used to help the real estate agents show houses to the buyers.
Answer to relevant QuestionsDraw a physical level 0 DFD for the following system and compare it with the logical model that you created in Chapter 5. A Video Store (AVS) runs a series of fairly standard video stores. Before a video can be put on the ...Identify the kinds of coupling that are represented in the followingsituations:Develop a program specification for Module 4.2.5 (Calculate Dealer Cost) in minicase 1.Name five types of files, and describe the primary purpose of each type.Describe the metadata associated with the physical ERD.
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