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Which forms has a relation that possesses data about an individual entity:(a) 2NF(b) 3NF(c) 4NF(d) 5NFThe question was posed to me in an online quiz.This intriguing question originated from Normal Forms in chapter Normalization of Database Management

Answer»

Right CHOICE is (c) 4NF

Best EXPLANATION: A Table is in 4NF if and only if, for every ONE of its non-trivial multivalued DEPENDENCIES X \twoheadrightarrow Y, X is a superkey—that is, X is either a candidate key or a superset thereof.



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