GATE CSE 2024 | Set 2 | Question: 10

Question

In the context of owner and weak entity sets in the $\text{ER}$ (Entity-Relationship) data model, which one of the following statements is TRUE?

• A. The weak entity set MUST have total participation in the identifying relationship
• B. The owner entity set MUST have total participation in the identifying relationship
• C. Both weak and owner entity sets MUST have total participation in the identifying relationship
• D. Neither weak entity set nor owner entity set MUST have total participation in the identifying relationship

Answer 1

A. The weak entity set must participate totally in the identify weak relationship.

Usually, there exist one to many relationship between strong entity and weak entity thus total participation from weak entity set.