A payroll data flow diagram has a data-store called Accumulated Salary Data.At one stage in the DFD,a process "Calculate YTD-Taxes" gets data from that data store,updates it in the process,and writes it back out.The diagram should show:
A)A single line with arrows on both ends labeled YTD Payroll Details
B)A dashed line with arrows on both ends labeled YTD Payroll Details
C)A line out of the data store labeled: Current YTD Payroll Details;and a line into the data store labeled: Updated YTD Payroll Details
D)Two separate data flow lines but each with the same name YTD Payroll Details
E)Two dashed lines but each with the same name of YTD Payroll Details

Question

Quizplus · Accepted Answer

This choice provides the clearest and most accurate representation of the data flow for the YTD Payroll Details. It shows the flow of information into and out of the Accumulated Salary Data store, and clearly labels the data store with both the current and updated versions of the YTD Payroll Details. The other options either do not provide enough detail or could be confusing to someone trying to interpret the diagram.

A Payroll Data Flow Diagram Has a Data-Store Called Accumulated