The total number of attributes (columns) present in a relation determines its what? MCQ with Answer and Explanation

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The total number of attributes (columns) present in a relation determines its what?

A. Schema

B. Degree

C. Domain

D. Cardinality

Answer: Option B

Solution (By JKSSB Mock Tests)

The number of attributes or columns in a relation is defined as the degree of that relation.

This question belongs to: Computer Database Management System (DBMS)

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Question #1

What is a view in a database?

A. An index on a table

B. A virtual table based on the result of a SELECT query

C. A physical table stored on disk

D. A backup of a table

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Correct Answer: Option B

Explanation:
A view is a logical representation of data, derived from one or more tables, but does not store data physically.

This question belongs to: Computer Database Management System (DBMS)

Question #2

In relational database terminology, a row in a table is precisely called a what?

A. Relation

B. Field

C. Tuple

D. Attribute

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Correct Answer: Option C

Explanation:
A single row or record in a relational database table is formally called a tuple.

This question belongs to: Computer Database Management System (DBMS)

Question #3

What is a database cursor?

A. A type of index

B. A user account

C. A control structure that enables traversal over rows in a result set

D. A backup file

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Correct Answer: Option C

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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