The following narrative describes the processing of customer mail orders at Phoenix Company.
Phoenix Company is a small manufacturing operation engaged in the selling of widgets. Customer mail orders are received in the sales order department, where sales order clerks open the orders and review them for accuracy. The clerks enter each order into the computer, where they are edited by comparing them to customer master data (stored on a disk). The computer displays the edited order on the clerk's screen. The clerk reviews and accepts the order. The order is then added to the sales event data (stored on a disk) and updates the sales order master data (also stored on a disk). As the order is recorded, it is printed on a printer in the warehouse (the picking ticket). A copy of the sales order is also printed in the sales order department and is sent to the customer (a customer acknowledgment).
(Complete only those requirements specified by your instructor)
a. Prepare a table of entities and activities.
b. Draw a context diagram.
c. Draw a physical data flow diagram (DFD).
d. Indicate on the table of entities and activities prepared for part a, the groupings, bubble numbers, and titles to be used in preparing a level 0 logical DFD.
e. Draw a level 0 logical DFD.
f. Draw a systems flowchart.
g. Prepare a control matrix, including explanations of how each recommended existing control plan helps to accomplish-or would accomplish in the case of missing plans-each related control goal. Your choice of recommended control plans should come from Exhibits 9.2, 9.3, or 9.4 as appropriate. Be sure to tailor the matrix columns to conform to the specifics of the Phoenix Company system. In doing so, assume the following two operations process goals only:
• To provide timely acknowledgment of customer orders.
• To provide timely shipment of goods to customers.
h. Annotate the systems flowchart prepared in requirement f to show the location of each control plan listed in the control matrix.