The PureProducts Company sells medical supplies to hospitals, clinics and doctors offices. PrueProducts uses an ERP system for all its business processes. PrueProducts employs the following procedures for accounts payable and cash disbursements.

The accounts payable (AP) department receives invoices from vendors. An AP clerk enters the PO numberfrom the invoice into the computer, and the computer displays the PO. The clerk then keys the invoice data. The computer matches the invoice data with data on the PO (purchase and receipt data). If there are price or quantity variances of more than 5%, the invoice is routed, vai workflow, to a purchasing agent for approval. Once validated (by the computer and, if necessary, purchasing), the computer records the invoice (i.e., accounts payable) and updates the PO and general ledger master data.

Every morning, the accounts payable department reviews open invoices (i.e., accounts payable) to determine if they should be paid. An AP clerk selects those invoices that are to be paid, and the computer prints a check in the accounts payable department and updates the accounts payable and general ledger master data. Accounts payable mails the check to the vendor.

For the company assigned by your instructor, complete the following requirements:

• Prepare a table of entities and activities
• Draw a context diagram
• Draw a physical data flow diagram (DFD)
• Prepare an annotated table of entites and activities. Indicate on this table the groupings, bubble numbers, and bubble titles to be used in preparing a level 0 logical DFD
• Draw a level 0 logical DFD