Database-Management-System
August 29, 2024Database-Management-System
August 29, 2024Database-Management-System
| Question 516 |
An entity instance is a single occurrence of an _______.
| entity type | |
| relationship type | |
| entity and relationship type | |
| None of these
|
Question 516 Explanation:
→ Entity type is the heading or schema and entity instance is the value of entity type at a particular instance.
Example:
PERSON(Age, Name, Address) is the Entity Type and PERSON( 28, Anand, Hyderabad) is the entity instance i.e. value of PERSON at a particular instance.
Example:
PERSON(Age, Name, Address) is the Entity Type and PERSON( 28, Anand, Hyderabad) is the entity instance i.e. value of PERSON at a particular instance.
Correct Answer: A
Question 516 Explanation:
→ Entity type is the heading or schema and entity instance is the value of entity type at a particular instance.
Example:
PERSON(Age, Name, Address) is the Entity Type and PERSON( 28, Anand, Hyderabad) is the entity instance i.e. value of PERSON at a particular instance.
Example:
PERSON(Age, Name, Address) is the Entity Type and PERSON( 28, Anand, Hyderabad) is the entity instance i.e. value of PERSON at a particular instance.
Subscribe
Login
0 Comments