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Introduction to SQL

Introduction to SQL
If you are going to use a combination of three or more AND and OR conditions, it is often easier to use the NOT and NOT IN operators.

False
True

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Introduction to SQL
Which of the following SQL commands can be used to add data to a database table?

INSERT
UPDATE
ADD
APPEND

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Introduction to SQL
The qualifier DISTINCT must be used in an SQL statement when we want to eliminate duplicate rows.

True
False

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Introduction to SQL
SQL is:

a data sublanguage.
a programming language.
a DBMS.
an operating system.

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

True
False

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Introduction to SQL
The SQL keyword BETWEEN is used:

None of these
as a wildcard.
for ranges.
to limit the columns displayed.

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