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

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

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System Analysis and Design
Unit testing is

running the system with line data by the actual user
None of these
testing changes made in an existing or a new program
is checking the logic of one or more programs in the candidate system
making sure that the new programs do in fact process certain transactions according to Specifications

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System Analysis and Design
An audit trial is

post-auditing the system after its implementation
designed to permit tracing of any input record or process performed on a system, back toits original sources
test data used by the system auditor
All of these
None of these

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