What is data redundancy? MCQ with Answer and Explanation

Question

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What is data redundancy?

A. Encrypted data

B. Duplication of data in multiple places

C. Absence of data

D. Processed information

Answer: Option B

Solution (By JKSSB Mock Tests)

Data redundancy refers to unnecessary duplication of data, which DBMS helps control.

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

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Practice More Database Management System (DBMS) Questions

Question #1

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What does the letter 'D' stand for in the widely accepted ACID properties of database transactions?

A. Definition

B. Data

C. Durability

D. Dependency

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Correct Answer: Option C

Explanation:
ACID stands for Atomicity, Consistency, Isolation, and Durability. Durability ensures that once a transaction commits, its changes survive system failures.

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

Question #2

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The actual collection of data tuples stored in a table at any specific point in time is called a what?

A. Relation Degree

B. Relation Schema

C. Relation Domain

D. Relation Instance

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Correct Answer: Option D

Explanation:
A Relation Instance is the specific collection of data rows (tuples) present in a table at a given moment. It changes frequently as data is modified.

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