What Is 4nf?

1.	What Is 4nf?
Answer» A relation schema R is said to be in 4NF if for EVERY Multivalued dependency X Y that holds over R, one of following is TRUE. 1.) X is subset or EQUAL to (or) XY = R. 2.) X is a super key. A relation schema R is said to be in 4NF if for every Multivalued dependency X Y that holds over R, one of following is true. 1.) X is subset or equal to (or) XY = R. 2.) X is a super key.

Answer»

A relation schema R is said to be in 4NF if for EVERY Multivalued dependency X Y that holds over R, one of following is TRUE.
1.) X is subset or EQUAL to (or) XY = R.
2.) X is a super key.

A relation schema R is said to be in 4NF if for every Multivalued dependency X Y that holds over R, one of following is true.
1.) X is subset or equal to (or) XY = R.
2.) X is a super key.

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What Is 4nf?

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