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Question

What is a subquery?

a.

A subquery is a select-from-where expression that is nested within another query

b.

A subquery is any query that is nested within another query

c.

A subquery is a relation that is externally specified which can be used to handle data in queries

d.

A subquery is a condition that excludes all the invalid tuples from the database

Posted under DBMS

Answer: (a).A subquery is a select-from-where expression that is nested within another query

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