Draw a usecase diagram and a set of activity diagrams for the following system. A Real Estate Inc. (AREI) sells houses. People who want to sell their houses sign a contract with AREI and provide information about their house. This information is kept in a database by AREI, and a subset of this information is sent to the citywide multiplelisting 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, the buyer completes a buyer information form that is entered into a buyer database, and AREI real estate agents use that information to search AREI's database and the multiplelisting service for houses that meet their needs. The results of these searches are printed and used to help the real estate agent show houses to the buyers.

1. Create a set of detailed usecase descriptions and a usecase point estimation of person hours (see Chapter 2) for the real estate system in exercise I.

2. Perform a verification and validation walkthrough of the functional models of the real estate system described in exercises I and J.

Hi I only need 1 and 2 please.

Agent show house to the buyer Activity diagram for the seller Sign a contract with AREI Provide information of their house Information is kept in database Information is sent to multiple listing service used by the agent Agent show house to the buyer Activity diagram for the seller Sign a contract with AREI Provide information of their house Information is kept in database Information is sent to multiple listing service used by the agent