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1. |
Consider a relation R(A, B, C), which of the following statements is not true according to inference rules for functional dependencies? |
A. | If A → B and B → C, then A → C |
B. | If AB → C, then A → B and B → C |
C. | If A → B and A → C, then A → BC |
D. | If A → B, then AC → BC |
Answer» C. If A → B and A → C, then A → BC | |