Systems Development and Documentation Techniques

3146 Words Mar 2nd, 2013 13 Pages
CHAPTER 3
SYSTEMS DEVELOPMENT AND DOCUMENTATION TECHNIQUES
SUGGESTED ANSWERS TO DISCUSSION QUESTIONS
3.1 Identify the DFD elements in the following narrative: A customer purchases a few items from a local grocery store. Jill, a salesclerk, enters the transaction in the cash register and takes the customer’s money. At closing, Jill gives both the cash and the register tape to her manager.

Data Flows: merchandise, payment, cash and register tape

Data Source: customer

Processes: capture sales and payment data and collect payment, give cash and register tape to manager

Storage: sales file (register tape), cash register

3.2 Do you agree with the following statement: “Any one of the systems documentation procedures can be used to
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converting source documents to magnetic tape using a computer-based optical character reader (OCR)

d. processing OCR documents online to update a database on magnetic disk

3.1 (continued) Assorted Flowcharting Segments

e. reading data from a magnetic disk into the computer to be printed on a report

f. using a computer or terminal to </inst>key data from source documents to a file stored on a magnetic disk

g. manually sorting and filing invoices numerically

3.1 (continued) Assorted Flowcharting Segments

h. using a terminal to enter source document data and send it to a </inst>remote location where an online processing system records it in a database stored on magnetic disk

i. a scheduled automatic backup of an internal hard drive to an external hard drive

j. using a terminal to </inst>query customer sales data maintained on a magnetic disk

3.1 (continued) Assorted Flowcharting Segments

k. enter employee hours recorded on time cards in the payroll transaction file maintained on disk and update wage data maintained on the payroll master file

3.1 (continued) Assorted Flowcharting Segments

l. use a terminal to </inst>access a price list maintained on disk to complete a purchase order. An electronic copy of the purchase order is sent to

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