What is the full form of RDBMS? MCQ with Answer and Explanation

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What is the full form of RDBMS?

A. Relational Data Binary Management System

B. Random Data Backup Management System

C. Real-time Database Management Software

D. Relational Database Management System

Answer: Option D

Solution (By JKSSB Mock Tests)

RDBMS stands for Relational Database Management System.

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

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Question #1

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Which of the following is a valid SQL function to convert a string to uppercase?

A. Both A and C

B. UPPER()

C. TO_UPPER()

D. UCASE()

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Correct Answer: Option A

Explanation:
UPPER() is standard SQL; some DBMS also support UCASE().

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

Question #2

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In relational database terminology, a row in a table is precisely called a what?

A. Field

B. Relation

C. Tuple

D. Attribute

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Correct Answer: Option C

Explanation:
A single row or record in a relational database table is formally called a tuple.

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

Question #3

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Which SQL function returns the average of a numeric column?

A. COUNT()

B. SUM()

C. MEAN()

D. AVG()

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Correct Answer: Option D

Explanation:
AVG() calculates the average of the values in a numeric column.

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

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