System Analysis and Design
In top down analyis and design

each succeeding phase is as detailed as the phase before it.
each succeeding phase is more detailed than the phase before it
each succeeding phase is less detailed than the phase before it
all of the listed here

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System Analysis and Design
An audit trial is

test data used by the system auditor
None of these
All of these
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

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