Which data model uses objects, classes, and inheritance features, mirroring concepts from object-oriented programming? MCQ with Answer and Explanation
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Question #1
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Which of the following is a property of a transaction that ensures that the database remains in a valid state before and after the transaction?
Correct Answer: Option C
Explanation:
Consistency ensures that a transaction brings the database from one valid state to another, maintaining all defined rules and constraints.
Consistency ensures that a transaction brings the database from one valid state to another, maintaining all defined rules and constraints.
This question belongs to:
Computer
Database Management System (DBMS)
Question #2
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In normalization, 1NF requires that:
Correct Answer: Option C
Explanation:
First Normal Form (1NF) ensures that each attribute contains only atomic (indivisible) values.
First Normal Form (1NF) ensures that each attribute contains only atomic (indivisible) values.
This question belongs to:
Computer
Database Management System (DBMS)
Question #3
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In DBMS, what is the role of a DBA?
Correct Answer: Option D
Explanation:
The Database Administrator (DBA) is responsible for designing, implementing, maintaining, and securing the database.
The Database Administrator (DBA) is responsible for designing, implementing, maintaining, and securing the database.
This question belongs to:
Computer
Database Management System (DBMS)
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