Question: Consider the schema R = (A, B, C, D, E, G) and the set F of functional dependencies: R is not in BCNF for many

Consider the schema R = (A, B, C, D, E, G) and the set F of functional dependencies: AB CD B D DE B DEG AB AC DE R is not in BCNF for many reasons, one of which arises from the functional dependency AB → CD. Explain why AB → CD shows that R is not in BCNF and then use the BCNF decomposition algorithm starting with AB → CD to generate a BCNF decomposition of R. Once that is done, determine whether your result is or is not dependency preserving, and explain your reasoning.

AB CD B D DE B DEG AB AC DE

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AB is not a super key for R nor is AB CD trivial We start using AB CD and replace R with R1 A B C D ... View full answer

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