Explain Why 4nf Is A Normal Form More Desirable Than Bcnf?

1.	Explain Why 4nf Is A Normal Form More Desirable Than Bcnf?
Answer» 4NF is more desirable than BCNF because it reduces the repetition of information. If we consider a BCNF schema not in 4NF (see Exercise 7.28), we OBSERVE that decomposition into 4NF does not lose information provided that a loss less join decomposition is used, yet redundancy is REDUCED. 4NF is more desirable than BCNF because it reduces the repetition of information. If we consider a BCNF schema not in 4NF (see Exercise 7.28), we observe that decomposition into 4NF does not lose information provided that a loss less join decomposition is used, yet redundancy is reduced.

Answer»

4NF is more desirable than BCNF because it reduces the repetition of information. If we consider a BCNF schema not in 4NF (see Exercise 7.28), we OBSERVE that decomposition into 4NF does not lose information provided that a loss less join decomposition is used, yet redundancy is REDUCED.

4NF is more desirable than BCNF because it reduces the repetition of information. If we consider a BCNF schema not in 4NF (see Exercise 7.28), we observe that decomposition into 4NF does not lose information provided that a loss less join decomposition is used, yet redundancy is reduced.

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