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In a relation between the entities the type and condition of the relation should be specified. That is called as______attribute.

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In a relation between the entities the type and condition of the relation should be specified. That is called as______attribute.

(a) Desciptive

(b) Derived

(c) Recursive

(d) Relative

This question was addressed to me in my homework.

I'd like to ask this question from The Entity-Relationship Model in division Database Systems Design and Implementation of Database Management

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The correct option is (a) Desciptive

The explanation is: Consider the entity sets student and section, which participate in a relationship set takes. We may wish to store a descriptive attribute grade with the relationship to record the grade that a student got in the class.

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