System Analysis and Design
The term scheme means

the relationship service bureau
None of these
a parent with no owners
a map of overall structure of a database.
two dimensional table

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System Analysis and Design
Advantages of Relational Database Management systems are

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

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