## Nisha Mittal is teaching live on Unacademy Plus

In a schema with attributes A, B, C, D and E following set of functional dependencies are given A B CDE E A Which of the following functional dependencies is NOT implied by the above set? A. CDAC B. BD CD C. BC CD D. AC-, BC

In a schema with attributes A, B, C, D and E following set of functional dependencies are given A B CD E B D Which of the following functional dependencies is NOT implied by the above set? A. CD AC B. BDCD C. BCCD D. AC- BC Apply membership test for all the given Functional Dependencies. 1.) CD->AC CD+ CDEAB 2.) BD->CD BD+ BD

In a schema with attributes A, B, C, D and E following set of functional dependencies are given A B CD E B D Which of the following functional dependencies is NOT implied by the above set? A. CD AC B. BDCD C. BCCD D. ACBC Apply membership test for all the given Functional Dependencies. 3.) BC CD BC+ BCDEA 4.) AC BC AC+ ACBDE

In a schema with attributes A, B, C, D and E following set of functional dependencies are given A B CD E B D Which of the following functional dependencies is NOT implied by the above set? A. CD AC B. BDCD C. BCCD D. ACBC B. BD+ BD i.e. BD cannot derive CD and hence is not implied.

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