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Functional Dependencies are the types of constraints that are based on______

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Functional Dependencies are the types of constraints that are based on______

(a) Key

(b) Key revisited

(c) Superset key

(d) None of the mentioned

The question was posed to me during an interview.

My question is from Normal Forms topic in division Normalization of Database Management

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Best answer
The correct answer is (a) Key

Easiest explanation - Key is the basic element needed for the constraints.

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