What is a domain in the context of the relational model? MCQ with Answer and Explanation

Question
What is a domain in the context of the relational model?
A. A table name
B. A set of allowed values for an attribute
C. A foreign key
D. A primary key
Answer: Option B
Solution (By JKSSB Mock Tests)
A domain defines the set of permissible values that an attribute can take, ensuring data consistency.
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 represents raw, unorganized, and unprocessed facts that lack contextual meaning?
A. Metadata
B. Information
C. Data
D. Knowledge
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Correct Answer: Option C

Explanation:
Data refers to raw, unorganized, and unprocessed facts, figures, or symbols that do not convey a specific meaning on their own. When data is processed and organized, it becomes information.
This question belongs to: Computer Database Management System (DBMS)
Question #2
Which SQL keyword is used within a SELECT query to filter records matching a specified pattern using wildcards?
A. LIKE
B. BETWEEN
C. IN
D. EXISTS
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Correct Answer: Option A

Explanation:
The LIKE operator is specifically used in a WHERE clause to perform pattern matching on string columns using wildcards (% and _).
This question belongs to: Computer Database Management System (DBMS)
Question #3
Which of the following is not an aggregate function in SQL?
A. MAX
B. SUM
C. AVG
D. DESC
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Correct Answer: Option D

Explanation:
DESC is a keyword for sorting order, not an aggregate function.
This question belongs to: Computer Database Management System (DBMS)
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