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

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

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System Analysis and Design
Sequential or series testing is

testing changes made in an existing or a new program
running the system with line data by the actual user
making sure that the new programs do in fact process certain transactions according to Specifications
is checking the logic of one or more programs in the candidate system

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