Any set of one or more attributes that collectively allow us to uniquely identify tuples in a relation is termed as a what? MCQ with Answer and Explanation
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Question #1
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Which of the following is a DML statement?
Correct Answer: Option A
Explanation:
UPDATE is a Data Manipulation Language (DML) command used to modify existing records in a table. CREATE, ALTER, DROP are DDL.
UPDATE is a Data Manipulation Language (DML) command used to modify existing records in a table. CREATE, ALTER, DROP are DDL.
This question belongs to:
Computer
Database Management System (DBMS)
Question #2
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Which of the following ensures data integrity in RDBMS?
Correct Answer: Option C
Explanation:
Integrity constraints such as keys enforce rules for valid data.
Integrity constraints such as keys enforce rules for valid data.
This question belongs to:
Computer
Database Management System (DBMS)
Question #3
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Which SQL keyword is used to remove a table from the database?
Correct Answer: Option B
Explanation:
DROP TABLE is a DDL command that deletes the table and its structure from the database.
DROP TABLE is a DDL command that deletes the table and its structure from the database.
This question belongs to:
Computer
Database Management System (DBMS)
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