Register

Candidate keys

437 views
0 votes
0 votes

Q18). Consider the table $R$ , with attributes $A,B,C,D$ and $E$. What is the largest number of candidate keys at the same time?

  1. 1
  2. 5
  3. 10
  4. 31

As we know number of candidate keys with n number of attributes  is $2^n -1$.Then how to solve this question?

User Avatar

1 Answer

Voting & Accepting an answer helps improve the community
← PreviousNext →
← Previous in categoryNext in category →

Related questions

1 votes
1 votes
0 answers
2
anupamsworld asked Jul 29, 2022
548 views
Finding Candidate Keys | Class Practice | Unacademy
Find the candidate key(s) of the relation R(UVWXYZ) with FD set F={UV-->W, XW-->Y, U-->XZ, Y-->U} XW UV, YV, WXV YUV, XV, WV None of these
Find the candidate key(s) of the relation R(UVWXYZ) with FD set F={UV >W, XW >Y, U >XZ, Y >U}XWUV, YV, WXVYUV, XV, WVNone of these
User Avatar
2 votes
2 votes
1 answer
3
Na462 asked May 26, 2018
1,963 views
Candidate Keys
Consider the following relation $R(A, B, C, D, E, F, G, H)$. The maximum number of super keys possible if $4$ simple candidate keys in relation $R$ are ________. Solution. What i did is $^8C_4 + ^8C_5 + ^8C_6 + ^8C_7 + ^8C_8 = 163$ Is it wrong ? and why
Consider the following relation $R(A, B, C, D, E, F, G, H)$. The maximum number of super keys possible if $4$ simple candidate keys in relation $R$ are ________.Solution....
User Avatar
Link Copied!