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In E-R model, Y is the dominant entity and X is the subordinate entity.

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In E-R model, Y is the dominant entity and X is the subordinate entity.
1. If X is deleted then Y is also deleted.
2. If Y  is deleted then X is also deleted.
3. If Y is deleted then X is not deleted.
4. none of the above
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Correct Answer - Option 2 : If Y  is deleted then X is also deleted.
  • Y is dominant entity and X is subordinate entity that means existence of X depends on existence of Y.
  • In other words, deletion of Y will cause deletion of X.
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