Database - ER Model and Business Rules - Discussion
Discussion Forum : ER Model and Business Rules - General Questions (Q.No. 4)
4.
When an entity instance must be a member of only one subtype, it is which of the following?
Discussion:
2 comments Page 1 of 1.
Ankit said:
6 years ago
Yes, you are Right @Belete.
The word entity instance should be replaced with weak entity instance.
The word entity instance should be replaced with weak entity instance.
Belete said:
6 years ago
There is no indicator whether the participation is total or partial so the answer will be A & B.
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