System Analysis and Design
Top-down programming is

an approach in which the top module is first tested then program modules are added from the highest level to the lowest level
a series or group of components that perform one or more operations of a more complex system
a group of related fields
a map of the programmer's view of the data

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System Analysis and Design
The outstanding Invoice file should be stared on a Pardon Access Storage Device if

payment recording is done in a batch rode
last record points to the first record
None of these
invoice data entry is on-line.
inquires concerning payable are to be answered on-line

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