System Analysis and Design
Advantages of Relational Database Management systems are

Security controls can be more easily implemented.
Data independence since it allows the database to grow by adding new attributes and relations.
Flexibility, of relating different logical files
All of these
None of these

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System Analysis and Design
An audit trial is

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

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