1. DFD31 External Entity Data Flow Process (CRUD) Data Store DFD Notations DFD Short-hands

2. DFD32 A clerk at the warehouse receives copies of the purchase orders (P.O.s) mailed to the suppliers. The clerk sorts all the P.O.s by date and places them in the P.O. file pending receipt of the goods. The suppliers deliver the ordered products along with packing slips (P.S.s) to the warehouse. The receiving clerk checks the P.S. for P.O. numbers and takes out the corresponding P.O.s from the P.O. file. She then compares the products received to the products ordered for any discrepancy. ???

3. DFD33 A clerk at the warehouse receives copies of the purchase orders (P.O.s) mailed to the suppliers. The clerk sorts all the P.O.s by date and places them in the P.O. file pending receipt of the goods. The suppliers deliver the ordered products along with packing slips (P.S.s) to the warehouse. The receiving clerk checks the P.S. for P.O. numbers and takes out the corresponding P.O.s from the P.O. file. She then compares the products received to the products ordered for any discrepancy. ???

4. DFD34 A clerk at the warehouse receives copies of the purchase orders (P.O.s) mailed to the suppliers. The clerk sorts all the P.O.s by date and places them in the P.O. file pending receipt of the goods. The suppliers deliver the ordered products along with packing slips (P.S.s) to the warehouse. The receiving clerk checks the P.S. for P.O. numbers and takes out the corresponding P.O.s from the P.O. file. She then compares the products received to the products ordered for any discrepancy. ???

5. DFD35 A clerk at the warehouse receives copies of the purchase orders (P.O.s) mailed to the suppliers. The clerk sorts all the P.O.s by date and places them in the P.O. file pending receipt of the goods. The suppliers deliver the ordered products along with packing slips (P.S.s) to the warehouse. The receiving clerk checks the P.S. for P.O. numbers and takes out the corresponding P.O.s from the P.O. file. She then compares the products received to the products ordered for any discrepancy. ???

6. DFD36 A clerk at the warehouse receives copies of the purchase orders (P.O.s) mailed to the suppliers. The clerk sorts all the P.O.s by date and places them in the P.O. file pending receipt of the goods. The suppliers deliver the ordered products along with packing slips (P.S.s) to the warehouse. The receiving clerk checks the P.S. for P.O. numbers and takes out the corresponding P.O.s from the P.O. file. She then compares the products received to the products ordered for any discrepancy. ???

7. DFD37 If the goods are damaged or are not of the quality specified in the P.O.s, they are sent back to the supplier with the P.S. and a rejection letter explaining the reason. Otherwise, the P.O. and the P.S. are used to prepare a receiver describing the discrepancies in terms of quantities or delivery dates The P.O., the P.S., and the receiver are sent to another clerk who updates the inventory file. The receivers, P.O.s, and P.S.s are then sent to the purchasing department for further processing.

8. DFD38 If the goods are damaged or are not of the quality specified in the P.O.s, they are sent back to the supplier with the P.S. and a rejection letter explaining the reason. Otherwise, the P.O. and the P.S. are used to prepare a receiver describing the discrepancies in terms of quantities or delivery dates The P.O., the P.S., and the receiver are sent to another clerk who updates the inventory file. The receivers, P.O.s, and P.S.s are then sent to the purchasing department for further processing.

9. DFD39 If the goods are damaged or are not of the quality specified in the P.O.s, they are sent back to the supplier with the P.S. and a rejection letter explaining the reason. Otherwise, the P.O. and the P.S. are used to prepare a receiver describing the discrepancies in terms of quantities or delivery dates The P.O., the P.S., and the receiver are sent to another clerk who updates the inventory file. The receivers, P.O.s, and P.S.s are then sent to the purchasing department for further processing.

10. DFD310 If the goods are damaged or are not of the quality specified in the P.O.s, they are sent back to the supplier with the P.S. and a rejection letter explaining the reason. Otherwise, the P.O. and the P.S. are used to prepare a receiver describing the discrepancies in terms of quantities or delivery dates The P.O., the P.S., and the receiver are sent to another clerk who updates the inventory file. The receivers, P.O.s, and P.S.s are then sent to the purchasing department for further processing. create

11. DFD311 A clerk at the warehouse receives copies of the purchase orders (P.O.s) mailed to the suppliers. The clerk sorts all the P.O.s by date and places them in the P.O. file pending receipt of the goods. The suppliers deliver the ordered products along with packing slips (P.S.s) to the warehouse. The receiving clerk checks the P.S. for P.O. numbers and takes out the corresponding P.O.s from the P.O. file. She then compares the products received to the products ordered for any discrepancy. Purchasing Department

12. DFD312 If the goods are damaged or are not of the quality specified in the P.O.s, they are sent back to the supplier with the P.S. and a rejection letter explaining the reason. Otherwise, the P.O. and the P.S. are used to prepare a receiver describing the discrepancies in terms of quantities or delivery dates The P.O., the P.S., and the receiver are sent to another clerk who updates the inventory file. The receivers, P.O.s, and P.S.s are then sent to the purchasing department for further processing. create