Relation R is decomposed using a set of functional dependencies F, and relation S is decomposed using another set of functional dependencies G. One decomposition is definitely BCNF, the other is definitely 3NF, but it is not known which is to make a guaranteed identification, which one of the following tests should be used on the deocmpositions? (Assume that the closures of F and G are available).

Relation R is decomposed using a set of functional dependencies F, and

1.	Relation R is decomposed using a set of functional dependencies F, and relation S is decomposed using another set of functional dependencies G. One decomposition is definitely BCNF, the other is definitely 3NF, but it is not known which is to make a guaranteed identification, which one of the following tests should be used on the deocmpositions? (Assume that the closures of F and G are available).
A.	Dependency-preservation
B.	Lossless-join
C.	BCNF definition
D.	3NF definition
Answer» D. 3NF definition

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