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Q. |
Consider a schema R(A, B, C, D) and functional dependencies A -> B and C -> D. Then the decomposition of R into R1 (A, B) and R2(C, 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» D. not dependency preserving and not lossless join |
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