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GATE | GATE CS 2020 | Question 24
  • Last Updated : 26 May, 2021

Which one of the following is used to represent the supporting many-one relationships of a weak entity set in an entity-relationship diagram ?
(A) Diamonds with double/bold border
(B) Rectangles with double/bold border
(C) Ovals with double/bold border
(D) Ovals that contain underlined identifiers

Answer: (A)

Explanation: According to Weak Entity Set in ER diagrams:

The relation between one strong and one weak entity is represented by double diamond.

Option (A) is correct.

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