358 views
0 votes
0 votes
Is repetition allow in foreign key ?

Give some reference

Please log in or register to answer this question.

Related questions

1 votes
1 votes
2 answers
1
Shivani gaikawad asked Sep 14, 2018
483 views
An instance of a relational schema R(A,B,C,D) has distinct values for attribute A then A can be 1) candidate key2)non key 3)super key4)none
0 votes
0 votes
1 answer
2
Shukrayani asked Oct 30, 2018
360 views
A system where commutativity is considered different, in how many ways the join of n relations r1,r2, . . . ,rn canbe taken?
1 votes
1 votes
1 answer
3
Vikas Verma asked Oct 2, 2018
549 views
W1(A) W2(A) Commit1 Commit2Is aA) Concurrent ScheduleB) Recoverable ScheduleC) Cascadeless rollback Recoverable scheduleD) Strictly recoverable schedule
2 votes
2 votes
4 answers
4