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The_____ operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple.

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The_____ operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple.

(a) Select

(b) Join

(c) Union

(d) Intersection

The question was asked during a job interview.

My question is from Relational Query Operations and Relational Operators topic in portion The Relational Model of Database Management

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The correct answer is (b) Join

Explanation: Join finds the common tuple in the relations and combines it.

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