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________ is an abstraction through which relationships are treated as higher level entities

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________ is an abstraction through which relationships are treated as higher level entities

(a) Creation

(b) Superseding

(c) Attribute separation

(d) Aggregation

I had been asked this question during an online exam.

My enquiry is from Extended E-R Features topic in section Database Design and the ER Model of RDBMS

1 Answer

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Best answer
The correct choice is (d) Aggregation

The best I can explain: One limitation of E-R model is that it cannot express relationships among relationships. Thus for this purpose, aggregation is used. Aggregation is an abstraction through which relationships are treated as higher level entities.

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