Question: 2. Create a physical level 0 DFD for the following, and compare it with the logical model that you created in Chapter 5: A Real

2. 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.

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