edited by
710 views

2 Answers

1 votes
1 votes

Answer : B

A is Correct. A Weak entity set in ER model doesn't have any key/Candidate key which can distinguish between any two records uniquely. 

C is correct. We can have multiple Candidate keys in a relation.

D is correct. A Relationship can have its own attributes. 

B is False (a Typo in Option B..It should be Relationship instead of relation)... In ER model, A Relationship between different Entity sets can be 1-1, M-N, 1-N, N-1.

0 votes
0 votes

Only is B is the Right Answer 

B:EVERY RELATION CAN NOT BE 1:1 RELATION ,IT CAN ALSO BE 1:M AND M:N OR M:1 RELATION ALSO

Related questions

0 votes
0 votes
3 answers
1
ajaysoni1924 asked May 22, 2018
490 views
minimum no. of tables required....!!!How to do such question where aggregation generalization or specialization is involved
1 votes
1 votes
0 answers
2
bts1jimin asked Aug 30, 2018
1,275 views
0 votes
0 votes
2 answers
4
priyanshu710 asked Sep 15, 2021
749 views
What is the minimum number of relations required to represent a one-to-many relationship having total participation on the many side?Can i have just a single table with a...