In an E-R, Y is the dominant entity and X is a subordinate entity. The – McqOptions

MCQOPTIONS

1.	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 X is deleted, u0026 remains the same
B.	Operationally, if X is deleted, so is Y
C.	existence is dependent on Y
D.	Operationally, if Y is deleted, so is X
Answer» C. existence is dependent on Y

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