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Recent questions tagged keys

5 votes

1 answer

1

number of superkey
consider the following relational schema R(ABCDE) .The number of super keys in relation R if every two attributes of relation R is candidate keys are ___________

set2018 asked in Databases Nov 12, 2017

4.0k views

0 votes

0 answers

2

Foreign Key
How one to many relation refers a foreign key?

srestha asked in Databases Sep 16, 2017

501 views

2 votes

1 answer

3

set2018 asked in Databases Sep 14, 2017

586 views

1 vote

3 answers

4

Self Doubt
Primary key is subset or proper subset of superkey ?

stblue asked in Databases Sep 1, 2017

by stblue

461 views

2 votes

1 answer

5

what is the num of superkey can we get from a1,a2...a n attributes?

hem chandra joshi asked in Databases Aug 23, 2017

by hem chandra joshi

432 views

0 votes

1 answer

6

Question Bank GATE
Find the Odd one Out: Candidate Key Super Key Primary Key Alternate Key

slowpoke asked in Databases May 4, 2017

424 views

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Recent questions tagged keys