What is a column in a relational database table formally called? MCQ with Answer and Explanation

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What is a column in a relational database table formally called?

A. Tuple

B. Attribute

C. Degree

D. Entity

Answer: Option B

Solution (By JKSSB Mock Tests)

A column in a database table represents a property or characteristic of the entity and is formally known as an attribute.

This question belongs to: Computer Database Management System (DBMS)

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Question #1

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Which type of database storage anomaly occurs when adding new data to a table is blocked because other unrelated data is missing?

A. Modification Anomaly

B. Insertion Anomaly

C. Deletion Anomaly

D. Update Anomaly

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Correct Answer: Option B

Explanation:
An Insertion Anomaly occurs when certain facts cannot be recorded in a database table without falsely manufacturing or requiring the presence of other unrelated facts.

This question belongs to: Computer Database Management System (DBMS)

Question #2

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Which operator in SQL is used to exclude specific data records from a search based on a collection of negative criteria?

A. MINUS

B. REMOVE

C. NOT IN

D. EXCEPT

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Correct Answer: Option C

Explanation:
The NOT IN operator filters the query results to exclude records whose values match any element within the provided list or subquery.

This question belongs to: Computer Database Management System (DBMS)