Draw an entity-relationship diagram to represent the following information

timer Asked: Apr 28th, 2015

Question description

Draw an entity-relationship diagram to represent the following information.  If you need to make any assumptions you can do so, but clearly list all assumptions that you make. 

Bob Smith owns Smith Realty.  Smith Realty is an independent full service realty company that serves Washington, Greene, Carter, and Unicoi counties in Tennessee.  They list properties for sale in the MLS (Multiple Listing Service) and represent buyers as brokers.  Smith Realty has been in business for 10 years and has previously tracked all of their customers and sales using a purchased real estate business application.  Because it is proprietary software, Smith Realty can’t access its data directly, but must use the application.  The reports available to them are somewhat limited and the company that created the software no longer supports it.

  Currently, Smith Realty has 4 agents, including Bob.  Smith Realty is growing and is always looking for good agents.  There is also a high turn over with agents.  Good agents move from agency to agency looking for the best benefits.  Less productive agents quit frequently.  Agents have to be licensed and have to meet state requirements in order to renew their license.  It’s import for Smith Realty to keep track of agent licensure because if an agent’s license expires, the fines can be substantial.

  Smith Realty has different types of customers.  Some sell property, some buy property, or a customer can be both a buyer and a seller.  Smith Realty prides itself on its customer service and because of this has a high rate of return customers as well as referrals.  Smith Realty is satisfied with the way the current Customer Relationship Management application tracks customer information.  It allows them to correspond with their customers and keep in contact with them.  Because of this, your design will only need customer ID to represent a customer.

  Smith Realty represents customers wishing to sell real estate.  In order to list the property in the MLS, Smith Realty gathers information pertinent to the property such as address, features, sq ft, acreage, taxes, utility bills, listing price, and other information that a buyer would need to know to make an informed decision. 

  Some customers are in the market to buy real estate.  Smith Realty represents these customers as a brokerage firm.  They show buyers properties that meet the customer’s expressed needs.  When the customer sees a property in which they are interested, Smith Realty represents the customer by helping make the offer and any counter offers.  Once an offer is accepted, Smith Realty also represents the customer in the closing processes. 

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