Functional Dependency Preservation Problem
I have a problem regarding decomposition of a relation. Suppose i have a relation R(A,B,C,D) with functional dependencies A->B, B->C, C->D, D->A.
Now I have divided this in the following three relations :
R1(AB), R2(BC), R3(CD).
My question: Is the functional dependency preserved in this decomposition? If yes, then How?
Now I have divided this in the following three relations :
R1(AB), R2(BC), R3(CD).
My question: Is the functional dependency preserved in this decomposition? If yes, then How?
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