System Analysis and Design
A couple:

is a data item that moves from one module to another
None of these
None of these
is represented by a line joining two modules
means that the upper module has the capability of calling the lower module

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System Analysis and Design
Advantages of Relational Database Management systems are

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

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