Create an entity relationship diagram to describe the data requirements of the system. Here is how...

Create an entity relationship diagram to describe the data requirements of the system.

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:

Choose the properties that you feel are necessary for each entity. May sure they appear on the diagram.

Expert Solution

I haved added the attributes and relations as per requirement. Buyer can buy one and only one property so one purchase agreement. Seller can sell many properties so he/she can have many purchase agreement. RealStateAgent is the witness so he/she is attribute in entity purchase agreement.

ER Diagram: (Crow's Foot Notation)

venereology answered 2 years ago

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Create an entity relationship diagram to describe the data requirements of the system. Here is how...

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