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The normal form which satisfies multivalued dependencies and which is in BCNF is

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The normal form which satisfies multivalued dependencies and which is in BCNF is

(a) 4 NF

(b) 3 NF

(c) 2 NF

(d) All of the mentioned

I have been asked this question in final exam.

This intriguing question comes from Multivalued Dependencies in portion Normalization of Database Management

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Correct answer is (a) 4 NF

Easy explanation - Fourth normal form is more restrictive than BCNF.

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