Which of the following is a logical data model? MCQ with Answer and Explanation

Question
Which of the following is a logical data model?
A. Relational model
B. Both A and C
C. Hierarchical model
D. Physical model
Answer: Option B
Solution (By JKSSB Mock Tests)
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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Practice More Database Management System (DBMS) Questions

Question #1
What is the purpose of the SQL 'CASE' statement?
A. To delete records
B. To implement conditional logic within a query
C. To update records
D. To create a table
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Correct Answer: Option B

Explanation:
CASE allows for conditional expressions, similar to IF-THEN-ELSE, within SQL statements.
This question belongs to: Computer Database Management System (DBMS)
Question #2
What is the purpose of the SQL 'IN' operator?
A. To join tables
B. To check if a value matches any value in a list
C. To check if a value is between two values
D. To check if a value is null
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Correct Answer: Option B

Explanation:
IN is used to test membership in a set of values.
This question belongs to: Computer Database Management System (DBMS)
Question #3
In DBMS, what is the role of a DBA?
A. Database Application Builder
B. Dynamic Binary Analyzer
C. Database Administrator who manages the database system
D. Data Backup Assistant
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Correct Answer: Option C

Explanation:
The Database Administrator (DBA) is responsible for designing, implementing, maintaining, and securing the database.
This question belongs to: Computer Database Management System (DBMS)
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