Finding Candidate Key|DBMS|NET|GATE|PSU|ISRO|HTET

  Рет қаралды 3,330

Computer Shastra

Computer Shastra

4 жыл бұрын

#ComputerShastra
In this video , we will cover MCQs based on finding candidate keys and super keys and learn the tricks .
This video is very useful for students preparing for NET, JRF , GATE, ISRO, HTET, PGT , TGT , KVS and other competitive exams .
Please subscribe our channel #ComputerShastra to watch our latest videos.

Пікірлер: 10
@manugupta4262
@manugupta4262 4 жыл бұрын
Although very helpful video thanku mam for ur efforts 🙏🙏🙏
@margaretamala1641
@margaretamala1641 2 ай бұрын
Please explain the last question ...easily in english
@arpitasingh8634
@arpitasingh8634 2 жыл бұрын
Thanku soo much ma'am
@computershastra
@computershastra 2 жыл бұрын
:)
@manugupta4262
@manugupta4262 4 жыл бұрын
Mam in last ques.....closure of D will give all the attributes....it should also b key.... Whereas in 3rd option it is B,C not BC
@scholarsr5659
@scholarsr5659 4 жыл бұрын
Yes, you are right. D is also a key in last question
@computershastra
@computershastra 4 жыл бұрын
Yes, this is a mistake on our part. We will be more careful in the future. We will edit this part asap. Thank you for your valuable input :)
@macbookpro123
@macbookpro123 Жыл бұрын
Consider a relation scheme R = (A, B, C, D, E, H) on which the following functional dependencies hold: {A->B, BC-> D, E->C, D->A}. What are the candidate keys of R? [GATE 2005] (a) AE, BE (b) AE, BE, DE (c) AEH, BEH, BCH (d) AEH, BEH, DEH
@macbookpro123
@macbookpro123 Жыл бұрын
Use the shortcut and solve
@computershastra
@computershastra Жыл бұрын
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