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The process of designating sub groupings within the entity set is called as _______

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The process of designating sub groupings within the entity set is called as _______

(a) Specialization

(b) Division

(c) Aggregation

(d) Finalization

The question was asked in a job interview.

This interesting question is from Extended E-R Features topic in chapter Database Design and the ER Model of RDBMS

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Correct answer is (a) Specialization

The best explanation: The process of designating sub-groupings within the entity set is called as specialization. Specialization allows us to distinguish among entities.

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