2. (2 points) Prove or disprove the following statement: it is possible for a set of MVDs to imply a non-trivial FD. Mor
Posted: Thu May 12, 2022 12:09 pm
I need answer within 2 hours, correct, I will give 2 thumps
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2. (2 points) Prove or disprove the following statement: it is possible for a set of MVDs to imply a non-trivial FD. More precisely, there exists a set A of MVDs and a non-trivial FD f such that A Ff. (An FD is trivial if it is of the form X + Y where Y CX; such an FD is always true.). Provide a direct proof, without using the soundness and completeness of the axioms for FDs and MVDs.
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2. (2 points) Prove or disprove the following statement: it is possible for a set of MVDs to imply a non-trivial FD. More precisely, there exists a set A of MVDs and a non-trivial FD f such that A Ff. (An FD is trivial if it is of the form X + Y where Y CX; such an FD is always true.). Provide a direct proof, without using the soundness and completeness of the axioms for FDs and MVDs.