Database-Management-System
August 26, 2024Indexing
August 26, 2024Database-Management-System
| Question 670 |
Real life constraints on the relational schema can be specified by
| Functional dependency | |
| Domain Integrity rules | |
| Referential Integrity rules | |
| Entity Integrity rules
|
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.