In: Computer Science
create an entity relationship diagram to describe the data requirements of the system.
Your client is a local real estate company that wants to automate some of their processes. Here is how some of the business is described: - In a real estate transaction, there is a buyer, a seller, a property, a purchase agreement and a real estate agent - A seller may have one or more properties to sell - A buyer wants to buy only one property - A purchase agreement is between the seller and the buyer, and only for one property - The real estate agent must be part of the purchase agreement as a witness to the transaction.
Specific instructions:
1.Choose the properties that you feel are necessary for each entity. May sure they appear on the diagram.
2. Choose a key for each entity. Make sure you identify it with the correct drawing convention.