The command to modify existing records in a table is: MCQ with Answer and Explanation

Question
The command to modify existing records in a table is:
A. ALTER
B. CHANGE
C. MODIFY
D. UPDATE
Answer: Option D
Solution (By JKSSB Mock Tests)
UPDATE is the DML command used to modify data in existing rows.
This question belongs to: Computer Database Management System (DBMS)
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Practice More Database Management System (DBMS) Questions

Question #1
Which property of ACID ensures that a transaction is treated as a single unit that either fully succeeds or fully fails?
A. Consistency
B. Durability
C. Atomicity
D. Isolation
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Correct Answer: Option C

Explanation:
Atomicity ensures that all operations within a transaction are completed successfully; otherwise, the transaction is aborted and all changes are rolled back.
This question belongs to: Computer Database Management System (DBMS)
Question #2
What does ACID stand for in database transactions?
A. Accuracy, Control, Integrity, Data
B. All Correct Information Display
C. Atomicity, Consistency, Isolation, Durability
D. Access, Create, Insert, Delete
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Correct Answer: Option C

Explanation:
ACID properties ensure reliable transaction processing in DBMS.
This question belongs to: Computer Database Management System (DBMS)
Question #3
Which of the following is a DCL (Data Control Language) command?
A. CREATE
B. SELECT
C. GRANT
D. COMMIT
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Correct Answer: Option C

Explanation:
GRANT and REVOKE are DCL commands. COMMIT is TCL, SELECT is DML, CREATE is DDL.
This question belongs to: Computer Database Management System (DBMS)
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