What is 'data about data' commonly referred to in a Database Management System? MCQ with Answer and Explanation

Question
What is 'data about data' commonly referred to in a Database Management System?
A. Metadata
B. Sub-data
C. Hyper-data
D. Directory
Answer: Option A
Solution (By JKSSB Mock Tests)
Metadata is defined as data about data. It describes the structure, constraints, data types, and properties of the actual data stored in a database.
This question belongs to: Computer Database Management System (DBMS)
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Practice More Database Management System (DBMS) Questions

Question #1
What is the main purpose of indexing in a database?
A. To backup data
B. To encrypt data
C. To speed up data retrieval
D. To delete data
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Correct Answer: Option C

Explanation:
Indexes improve the speed of data retrieval operations on a database table.
This question belongs to: Computer Database Management System (DBMS)
Question #2
What is the situation called when two or more transactions are permanently blocked, each waiting for a lock held by the other transaction to be released?
A. Concurrency
B. Deadlock
C. Isolation failure
D. Starvation
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Correct Answer: Option B

Explanation:
A Deadlock occurs when two or more transactions are stuck in a circular dependency, each waiting for resources locked by the other, preventing progress.
This question belongs to: Computer Database Management System (DBMS)
Question #3
What is a database cursor?
A. A backup file
B. A control structure that enables traversal over rows in a result set
C. A type of index
D. A user account
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Correct Answer: Option B

Explanation:
A cursor allows row-by-row processing of query results, often used in procedural extensions of SQL.
This question belongs to: Computer Database Management System (DBMS)
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