Database-Management-System
August 29, 2024Nielit Scientist-C 2016 march
August 29, 2024Nielit Scientist-C 2016 march
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Question 5
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A primary key, if combined with a foreign key creates
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parent child relationship between the tables that connect them
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many-to-many relationship between the tables that connect them
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network model between the tables connect them
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none of these
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Question 5 Explanation:
Using the two relationships mother and father provides us a record of a child’s mother, even if we are not aware of the father’s identity; a null value would be required if the ternary relationship parent is used. Using binary relationship sets is preferable in this case.
Correct Answer: A
Question 5 Explanation:
Using the two relationships mother and father provides us a record of a child’s mother, even if we are not aware of the father’s identity; a null value would be required if the ternary relationship parent is used. Using binary relationship sets is preferable in this case.