Purchasinngayment Procedures The owchart in Figure 3 and the le structure diagram in Figure 4 illustrate the purchasingfpayment procedures at the central warehouse. Warehouse Each morning Walker reviews an automatically generated inventory status report from his ofce terminal. He determines the items that need replenishing and selects suppliers from the 1|Vendor le. Walker then adds a record to the purchase order file. The system assigns each new record a unique number {PD Number) as the primary key. Walker manually enters the date, the product to be ordered, order quantity, expected unit cost (the extended cost is automatically calculated by the system), and the 1D number of the selected vendor. The purchase orders are then printed on Walker's terminal, signed by him, and mailed by his secretary to the respective suppliers. Receiving 1When the products are received at the receiving dock, a receiving clerk counts and inspects them. The clerk adds a record to the Receiving Report file from the terminal in the receiving area. The system assigns a unique key (RR Num] to each record. The clerk manually enters the purchase order number, product number(s}, quantity received, vendor ID number, and the date of receipt. The receiving system is not particularly user friendly. If errors are made during data entry, the clerk must void the receiving report and begin