Database-Management-System
August 26, 2024Indexing
August 26, 2024Database-Management-System
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Question 670
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Real life constraints on the relational schema can be specified by
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Functional dependency
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Domain Integrity rules
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Referential Integrity rules
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Entity Integrity rules
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Question 670 Explanation:
→A relation is nothing but a table of values. Every row in the table represents a collection of related data values.
→These rows in the table denote a real-world entity or relationship.
→Functional dependency is a relationship that exists when one attribute uniquely determines another attribute.
→These rows in the table denote a real-world entity or relationship.
→Functional dependency is a relationship that exists when one attribute uniquely determines another attribute.
Correct Answer: A
Question 670 Explanation:
→A relation is nothing but a table of values. Every row in the table represents a collection of related data values.
→These rows in the table denote a real-world entity or relationship.
→Functional dependency is a relationship that exists when one attribute uniquely determines another attribute.
→These rows in the table denote a real-world entity or relationship.
→Functional dependency is a relationship that exists when one attribute uniquely determines another attribute.