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Consider a relation R ( A , B , C , D ) and the functional dependencies that hold over R: ABC - > D
Consider a relation RABCD and the functional dependencies that hold over R:
ABCD DA
Consider the decomposition of R into RABC and RBCD Could this
decomposition have been the result of applying the BCNF decomposition algorithm to
R
Is R and R a lossless decomposition?
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