Question

Which is the notation for weak entity set in ER diagram?

• A. Dashed rectangle
• B. Double rectangle
• C. Dashed diamond
• D. Double eclipse

Hint:

Weak entity = double rectangle; needs a strong entity for identification.

Answer 1

The Correct Option is B

In ER diagrams:
- Weak entity sets are represented using a double rectangle.
- Their identifying relationships are shown using double diamonds.