What is the role of the 'WHERE' clause in an UPDATE statement? MCQ with Answer and Explanation

Question
What is the role of the 'WHERE' clause in an UPDATE statement?
A. To sort the results
B. To join tables
C. To specify the new values
D. To specify which rows to update
Answer: Option D
Solution (By JKSSB Mock Tests)
The WHERE clause in UPDATE identifies the rows that will be updated. Without it, all rows would be updated.
This question belongs to: Computer Database Management System (DBMS)
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Practice More Database Management System (DBMS) Questions

Question #1
Which data model uses objects, classes, and inheritance features, mirroring concepts from object-oriented programming?
A. Object-Oriented Data Model
B. Network Data Model
C. Flat Data Model
D. Relational Data Model
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Correct Answer: Option A

Explanation:
The Object-Oriented Data Model integrates object-oriented programming languages directly with databases, storing data as objects with attributes and methods.
This question belongs to: Computer Database Management System (DBMS)
Question #2
What is the term for a column in a database table?
A. Relation
B. Tuple
C. Attribute
D. Entity
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Correct Answer: Option C

Explanation:
An attribute is a column or field in a table, representing a property of the entity.
This question belongs to: Computer Database Management System (DBMS)
Question #3
Which SQL command is used to permanently remove an entire table structure along with all its data from the database?
A. TRUNCATE
B. DROP
C. DELETE
D. REMOVE
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Correct Answer: Option B

Explanation:
The DROP command is a DDL statement that completely removes a table's structure, definition, and all its associated data from the database.
This question belongs to: Computer Database Management System (DBMS)
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