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3.10 (continued)
c. A customer places an online order to purchase merchandise. The order is
approved, filled, and sent to the customer with an invoice.
3.10 (continued)
d. An inventory request is received by the purchasing department. The purchasing
department prepares and sends a purchase order to the appropriate vendor.
Context
Level 0
3.10 (continued)
e. A vendor invoice is received, reviewed, and compared against the appropriate
purchase order, then paid and filed.
3.10 (continued)
f. A bill of lading for ordered inventory is received from a vendor, recorded,
checked against the appropriate purchase order, and filed.
Context
Level 0
3 .11 Prepare a program flowchart to help Melanie program this process.
3.12
DFD’s
1. Statements are prepared and sent to customers from data contained in
the accounts receivable data store.
B
FLOWCHARTS
4. A 2-part check is manually prepared from data on a vendor invoice.
G
5. The system prepares a check that is mailed to the customer. I
both the sales order data base and the customer data base.
disbursements file.
customer and the other is filed.
receivable master file and the cash receipts master file.
3.13 Students are to replicate the flowchart presented in the problem using documentation software
3.14 Students are to replicate the data flow diagram presented in the problem using documentation
SUGGESTED ANSWERS TO THE CASES
3-1 You are the systems analyst for the Wee Willie Williams Widget Works (also known as Dub
5, which is a shortened version of 5 Ws). Dub 5 produces computer keyboard components. It
has been producing keyboards for more than 20 years and has recently signed an exclusive
10-year contract to provide the keyboards for all Dell personal computers. As the systems
analyst, you have been assigned the task of developing a level 0 DFD for Dub 5’s order
processing system. You have finished gathering all the information you need to develop the
first-pass DFD and now want to complete the diagram.
3-1 Level 1 DFD for Dub 5:
Case 3-1 Dub 5 Business Processing Diagram
Employee Activities Performed
Order
Processing
Clerk From Customer No
Customer not apprvd for
credit: OR order > credit
limit Enter
Sufficient Inv
Notify
customer of
insufficient
