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Functional dependencies is NOT implied by the above set (in Hindi )
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Nisha Mittal is teaching live on Unacademy Plus

Nisha Mittal
🌟 MCA Gold Medalist 🌟 Star Educator 🌟Gate Qualified 🔴UGC NET qualified🔴🌟YouTuber ☆🌟BOOK published on LINUX ADMINISTRATION by kalyani publish

U
Unacademy user
nice work,mam..very helpful.. thanks a lot for such a good course.
AB
Thanks Mam for your valuable guidance
  1. 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


  2. 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


  3. 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


  4. 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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