System Analysis and Design
Advantages of Relational Database Management systems are

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

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System Analysis and Design
HIPO

All of these
None of these
captures the essence of top down decomposition.
consists of a hierarchy chart and an associated set of input/process/ output charts
is a forms-driven technique in which standard forms are used to document the information

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