System Analysis and Design
Nassi - schneiderman charts

None of these
often describe over lapping control structures
both (a) and (c)
are being replaced by flowcharts
are made up of boxes within boxes

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System Analysis and Design
Advantages of Relational Database Management systems are

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

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