The range of all permissible and valid values that an attribute can hold is formally defined as its what? MCQ with Answer and Explanation

Question
The range of all permissible and valid values that an attribute can hold is formally defined as its what?
A. Relation
B. Domain
C. Tuple
D. Schema
Answer: Option B
Solution (By JKSSB Mock Tests)
A Domain is the pool of legal, atomic values from which an attribute can take its value.
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 way to avoid redundancy in a database?
A. Denormalization
B. Indexing
C. Replication
D. Normalization
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Correct Answer: Option D

Explanation:
Normalization reduces redundancy by organizing data into tables with minimal duplication.
This question belongs to: Computer Database Management System (DBMS)
Question #2
In DBMS, what is the role of a DBA?
A. Dynamic Binary Analyzer
B. Database Administrator who manages the database system
C. Data Backup Assistant
D. Database Application Builder
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Correct Answer: Option B

Explanation:
The Database Administrator (DBA) is responsible for designing, implementing, maintaining, and securing the database.
This question belongs to: Computer Database Management System (DBMS)
Question #3
What is a subquery in database terminology?
A. An error log file.
B. A query that runs on a backup server.
C. A nested SQL query placed completely inside another outer query statement.
D. A query that executes after the main query terminates.
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Correct Answer: Option C

Explanation:
A subquery (or nested query) is an inner SQL SELECT statement embedded within an outer statement (such as a WHERE, FROM, or SELECT clause).
This question belongs to: Computer Database Management System (DBMS)
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