prepare

a) a context diagram

b) a physical data flow diagram

c) a document flowchart

Syahid Sdn. Bhd. is a medium-sized merchandising company. The purchasing process at Syahid San. Bhd. is described as follow: The purchasing activities start at the purchasing department when a purchasing clerk receives a purchase requisition from the inventory control department. The purchasing clerk prepares four copies of purchase order based on the information in the supplier files. First copy of the purchase order is sent to the supplier. Second copy of the purchase order is sent to the receiving department to notify them of incoming delivery by the supplier. Third copy of the purchase order is sent to the accounts payable department. Last copy of the purchase order together with purchase requisition is filed in purchase order file by supplier's number. In the receiving department, the clerk temporarily files the purchase order until ordered goods arrive. When the goods and packing slip are received from the supplier, the receiving clerk counts the quantity of the goods and matched with the quantity on the purchase order. After that, the receiving clerk prepares four copies of receiving report. First copy of the receiving report together with the goods is sent to the storeroom. Second copy of the receiving report is forwarded to accounts payable department. Third copy of the receiving report is distributed to inventory control department. Fourth copy of the receiving report together with the packing slip and purchase order are filed in a supporting documents file chronologically The accounts payable clerk temporarily files the purchase order received from the purchasing department and the receiving report from the receiving department. Upon receiving the invoice from supplier, accounts payable clerk takes out the purchase order and receiving report to match against the supplier's invoice. Then, the accounts payable clerk uses the invoice to update the accounts payable subsidiary ledger and the purchases journal. Lastly. the account payable clerk attaches the purchase order, receiving report and supplier's invoice and files in an open invoice file by date