Which data model uses objects, classes, and inheritance features, mirroring concepts from object-oriented programming? MCQ with Answer and Explanation

Question
Which data model uses objects, classes, and inheritance features, mirroring concepts from object-oriented programming?
A. Network Data Model
B. Relational Data Model
C. Flat Data Model
D. Object-Oriented Data Model
Answer: Option D
Solution (By JKSSB Mock Tests)
The Object-Oriented Data Model integrates object-oriented programming languages directly with databases, storing data as objects with attributes and methods.
This question belongs to: Computer Database Management System (DBMS)
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Practice More Database Management System (DBMS) Questions

Question #1
Which of the following is a method to avoid deadlock?
A. Lock ordering
B. Using a timeout
C. Deadlock detection and resolution
D. All of the above
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Correct Answer: Option D

Explanation:
Strategies to handle deadlocks include timeout, lock ordering, and detection with rollback.
This question belongs to: Computer Database Management System (DBMS)
Question #2
What is a subquery in SQL?
A. A query that is always correlated
B. A query that is used to create a table
C. A query nested inside another query
D. A query that returns multiple results
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Correct Answer: Option C

Explanation:
A subquery is a SELECT statement nested within another SQL statement (e.g., SELECT, INSERT, UPDATE, DELETE).
This question belongs to: Computer Database Management System (DBMS)
Question #3
Which of the following is a logical data model?
A. Relational model
B. Both A and C
C. Physical model
D. Hierarchical model
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Correct Answer: Option B

Explanation:
Logical data models include relational, hierarchical, and network models. Physical models describe storage details.
This question belongs to: Computer Database Management System (DBMS)
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