MCQOPTIONS
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| 1. |
X Y holds on a schema k(K) if? |
| A. | tAt least one legal instance satisfies the functional dependency |
| B. | tNo legal instance satisfies the functional dependency |
| C. | tEach and every legal instance satisfies the functional dependency |
| D. | tNone of the mentioned |
| Answer» D. tNone of the mentioned | |