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Which server can join the indexes when only multiple indexes combined can cover the query?

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Which server can join the indexes when only multiple indexes combined can cover the query?

(a) SQL

(b) DBMS

(c) RDBMS

(d) All of the mentioned

The question was posed to me by my school teacher while I was bunking the class.

The origin of the question is Subqueries in section Manipulating Data with Select of SQL Server

1 Answer

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Best answer
Right choice is (a) SQL

To elaborate: Indexing reduces the difficulty in searching the data.

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