Question

Given a relation R(A, B, C, D, E) with the following FD Set FD = {...

Given a relation R(A, B, C, D, E) with the following FD Set
FD = { A→C, B→C, C→D, DE→A, CE→A}
Suppose we decompose it into R1(A, D), R2(A, B), R3(B, E), R4(C, D, E) and R5(A, E), is it a lossless decomposition? Show your proof.

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Answer #1

Therefore, it is not a lossless decomposition.

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