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UGC-NET | UGC-NET CS 2017 Nov - III | Question 12
Consider a schema R(A, B, C, D) and following functional dependencies.
A → B B → C C → D D → BThen decomposition of R into R1 (A, B), R2(B, C) and R3(B, D) is __________ .
(A)
Dependency preserving and lossless join.
(B)
Lossless join but not dependency preserving.
(C)
Dependency preserving but not lossless join.
(D)
Not dependency preserving and not lossless join.
Answer
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