MCQOPTIONS
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MCQOPTIONS
| 1. |
Consider a schema R(A,B,C,D) and functional dependencies A->B and C->D. Then the decomposition of R into R1(AB) and R2(CD) 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 | |