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Nisha Mittal

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

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Gopi Krishna Reddy konda

3 years ago

Sir, i am getting a different answer in question no 5, can u tell me where iam wrong, please.
(A+7)/6=22 =>A=125 =>A/5=25.. A=sum of ages of other family members

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Mohit sharma

3 years ago

Let me take your solution like this: A=old average; so the total age seven year ago was A*5 but now after 7 years we have 6 members. to total increase in ages would be 7*6 therefore the equation for new average will be like (A*5+7*6)/6=22, which on solving gives A=18;

Gagandeep

3 months ago

done mam

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DP

Deepika Pathania

4 months ago

done

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Jagdambika Prasad Tiwari

7 months ago

mam how we calculate number of candidate keys in a relation

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Anu Radha

7 months ago

done.please teach in English I don't know hindi. please give more mcq mam

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Yojana Jain

7 months ago

Done mam....need more questions from u..thnx

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Finding the candidate keys

Finding the candidate keys

Finding the candidate keys

R = ABCDE F = { A-> BE. C-> BE, B-> D)

R ABCDE, F- {A-> BE, C-> BE, B-> D) attribute closure: A+ABDE B+ BD C+CBDE D+ D E+E

R ABCDE, F- {A-> BE, C-> BE, B-> D) attribute closure: A+ABDE B+ BD C+CBDE D+ D E+E The 2 attributes that can not be attained from any functional dependency AC. AC+ A,C,B,E,D)

R-ABCD, F-A-> BCD, C->A) Attribute closure: A+ABCD B+ B C+ABCD D+ D Our candidate keys are A and C

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