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Introduction to SQL

Introduction to SQL
Which operator performs pattern matching?

BETWEEN operator
EXISTS operator
None of these
LIKE operator

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Introduction to SQL
A subquery in an SQL SELECT statement is enclosed in:

CAPITAL LETTERS.
parenthesis -- (...) .
braces -- {...}.
brackets -- [...].

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Introduction to SQL
ORDER BY can be combined with the SELECT statements.

False
True

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Introduction to SQL
The SQL keyword(s) ________ is used with wildcards.

NOT IN only
LIKE only
IN only
IN and NOT IN

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Introduction to SQL
Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value.

False
True

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Introduction to SQL
The SQL keyword GROUP BY instructs the DBMS to group together those rows that have the same value in a column.

False
True

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