System Analysis and Design
An audit trial is

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

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System Analysis and Design
Data Definition Language (DDL)

determine how data must be structured to produce the user's view
describes how data are structured in the data base
all of the listed here
specifies for the DBMS what is required; the techniques used to process data

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