Define an abstraction, Database Management System

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Define an abstraction by which relationships are treated as higher level entities

Ans: Aggregation. 

It is an abstraction by which relationships are treated as higher level entities Aggregation. (In ER diagram, aggregation is utilized to denote a relationship as an entity set.)


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DBMS , need a DBMS system on any data for assignment.

need a DBMS system on any data for assignment.

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