System Analysis and Design
An audit trial is

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

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System Analysis and Design
A Decision table

documents rules, that select one or more actions, based on one or more conditions, from a set of possible conditions.
shows the decision paths
represents the information flow
gets an accurate picture of the system

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