Daniel's Pizza's sales process is described as follows: Company sales people are assigned to convenience stores by geographical areas. The convenience stores place orders for the frozen pizzas with their salesperson. There are three methods of payment: (1) immediately, (2) on the 10th of the following month, or (3) over the course of six months. When cash is received, a cashier (who is not a salesperson) makes deposits into one of the company's bank accounts. Each sale has a sales invoice number, invoice amount and date; each cash receipt has a cash receipt number and amount. Employee information includes employ ID, name, DOB, and address. Inventory info includes item number, name and weight. Cash account info includes account number and account balance. 1. Prepare an REA diagram of the sales process, including cardinalities. 2. Identify the tables required to implement this REA model in a relational database.