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In an entity relationship, y is the dominant entity and x is a subordinate entity. Which of the following is/are incorrect?
- a)Operationally , if y is deleted, so is x
- b)x is existence dependent on y
- c)Operationally x is deleted, so is y
- d)Operationally, x is deleted, y remains the same
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
In an entity relationship, y is the dominant entity and x is a subordi...
1. y is dominant entity.
2. x is subordinate entity..
Since, y is dominant entity. So does not depend on any other and x is subordinate. So x is existence dependent on y and deletion of x does not effect y, So, x is detected, so y is incorrect.
Since, y is dominant entity. So does not depend on any other and x is subordinate. So x is existence dependent on y and deletion of x does not effect y, So, x is detected, so y is incorrect.
Most Upvoted Answer
In an entity relationship, y is the dominant entity and x is a subordi...
Explanation:
In an entity relationship, the dominant entity is the one that drives the relationship and the subordinate entity is dependent on the dominant entity. Let's analyze each option to determine which one is incorrect.
a) Operationally, if y is deleted, so is x:
This statement is correct. In an entity relationship, if the dominant entity (y) is deleted, it implies that all subordinate entities (x) associated with it will also be deleted. This is known as a cascading delete operation.
b) x is existence dependent on y:
This statement is also correct. The subordinate entity (x) is existence dependent on the dominant entity (y). It means that the existence of x is directly tied to the existence of y. If y ceases to exist, x also loses its purpose and cannot exist independently.
c) Operationally x is deleted, so is y:
This statement is incorrect. In an entity relationship, the deletion of the subordinate entity (x) does not imply the deletion of the dominant entity (y). The dominant entity can exist independently and is not affected by the deletion of subordinate entities.
d) Operationally, x is deleted, y remains the same:
This statement is correct. The deletion of the subordinate entity (x) does not impact the dominant entity (y). Y can continue to exist even if x is deleted. The relationship between x and y might be affected, but the dominant entity itself remains unaffected.
Therefore, the incorrect statement is c) Operationally x is deleted, so is y, as the deletion of x does not imply the deletion of y in an entity relationship.
In an entity relationship, the dominant entity is the one that drives the relationship and the subordinate entity is dependent on the dominant entity. Let's analyze each option to determine which one is incorrect.
a) Operationally, if y is deleted, so is x:
This statement is correct. In an entity relationship, if the dominant entity (y) is deleted, it implies that all subordinate entities (x) associated with it will also be deleted. This is known as a cascading delete operation.
b) x is existence dependent on y:
This statement is also correct. The subordinate entity (x) is existence dependent on the dominant entity (y). It means that the existence of x is directly tied to the existence of y. If y ceases to exist, x also loses its purpose and cannot exist independently.
c) Operationally x is deleted, so is y:
This statement is incorrect. In an entity relationship, the deletion of the subordinate entity (x) does not imply the deletion of the dominant entity (y). The dominant entity can exist independently and is not affected by the deletion of subordinate entities.
d) Operationally, x is deleted, y remains the same:
This statement is correct. The deletion of the subordinate entity (x) does not impact the dominant entity (y). Y can continue to exist even if x is deleted. The relationship between x and y might be affected, but the dominant entity itself remains unaffected.
Therefore, the incorrect statement is c) Operationally x is deleted, so is y, as the deletion of x does not imply the deletion of y in an entity relationship.
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In an entity relationship, y is the dominant entity and x is a subordi...
Why not option A
I think if parent has no record then child should delete its record by ODC
I think if parent has no record then child should delete its record by ODC
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In an entity relationship, y is the dominant entity and x is a subordinate entity. Which of the following is/are incorrect?a)Operationally , if y is deleted, so is xb)x is existence dependent on yc)Operationally xis deleted, so is yd)Operationally, x is deleted, y remains the sameCorrect answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2025 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about In an entity relationship, y is the dominant entity and x is a subordinate entity. Which of the following is/are incorrect?a)Operationally , if y is deleted, so is xb)x is existence dependent on yc)Operationally xis deleted, so is yd)Operationally, x is deleted, y remains the sameCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In an entity relationship, y is the dominant entity and x is a subordinate entity. Which of the following is/are incorrect?a)Operationally , if y is deleted, so is xb)x is existence dependent on yc)Operationally xis deleted, so is yd)Operationally, x is deleted, y remains the sameCorrect answer is option 'C'. Can you explain this answer?.
In an entity relationship, y is the dominant entity and x is a subordinate entity. Which of the following is/are incorrect?a)Operationally , if y is deleted, so is xb)x is existence dependent on yc)Operationally xis deleted, so is yd)Operationally, x is deleted, y remains the sameCorrect answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2025 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about In an entity relationship, y is the dominant entity and x is a subordinate entity. Which of the following is/are incorrect?a)Operationally , if y is deleted, so is xb)x is existence dependent on yc)Operationally xis deleted, so is yd)Operationally, x is deleted, y remains the sameCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In an entity relationship, y is the dominant entity and x is a subordinate entity. Which of the following is/are incorrect?a)Operationally , if y is deleted, so is xb)x is existence dependent on yc)Operationally xis deleted, so is yd)Operationally, x is deleted, y remains the sameCorrect answer is option 'C'. Can you explain this answer?.
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In an entity relationship, y is the dominant entity and x is a subordinate entity. Which of the following is/are incorrect?a)Operationally , if y is deleted, so is xb)x is existence dependent on yc)Operationally xis deleted, so is yd)Operationally, x is deleted, y remains the sameCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for In an entity relationship, y is the dominant entity and x is a subordinate entity. Which of the following is/are incorrect?a)Operationally , if y is deleted, so is xb)x is existence dependent on yc)Operationally xis deleted, so is yd)Operationally, x is deleted, y remains the sameCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of In an entity relationship, y is the dominant entity and x is a subordinate entity. Which of the following is/are incorrect?a)Operationally , if y is deleted, so is xb)x is existence dependent on yc)Operationally xis deleted, so is yd)Operationally, x is deleted, y remains the sameCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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