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In an E-R, Y is the dominant entity and X is a subordinate entity. Then which of the following is incorrect ?

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Q.

In an E-R, Y is the dominant entity and X is a subordinate entity. Then which of the following is incorrect ?

[A] operationally, If Y is deleted, so is X

[B] X existence is dependent on Y

[C] operationally, if X is deleted, so is Y

[D] operationally, if X is deleted, Y remains the same

Answer & Explanation
Option: [B]

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