What is metadata? MCQ with Answer and Explanation

Question Report Error

What is metadata?

A. Data about data

B. Backup data

C. Temporary data

D. User data

Answer: Option A

Solution (By JKExamLibrary)

Metadata is data that provides information about other data, such as structure and constraints.

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

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Practice More Database Management System (DBMS) Questions

Question #1 Report Error

In SQL, which clause is used to specify the table(s) from which to retrieve data?

A. WHERE

B. SELECT

C. GROUP BY

D. FROM

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Correct Answer: Option D

Explanation:
The FROM clause identifies the table(s) from which data is to be selected.

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

Question #2 Report Error

Which language category in SQL is used by database administrators to grant and revoke access privileges and security permissions?

A. DCL

B. DML

C. DDL

D. TCL

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Correct Answer: Option A

Explanation:
Data Control Language (DCL) includes commands like GRANT and REVOKE, which manage privileges and security configurations for database users.

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

Question #3 Report Error

Which of the following is a valid SQL statement to add a new column to a table?

A. Both A and C

B. ALTER TABLE table_name ADD column_name datatype;

C. ADD COLUMN TO table_name column_name datatype;

D. ALTER TABLE table_name ADD COLUMN column_name datatype;

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Correct Answer: Option A

Explanation:
Both 'ADD column_name datatype' and 'ADD COLUMN column_name datatype' are valid syntax in some DBMS, but standard SQL uses 'ADD column_name datatype'. However, many DBMS support both.

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

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