System Analysis and Design
Data manipulation language (DML)

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
determine how data must be structured to produce the user's view

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System Analysis and Design
An audit trial is

All of these
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
None of these
post-auditing the system after its implementation

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