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Introduction to SQL

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

APPEND
ADD
INSERT
UPDATE

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

True
False

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Introduction to SQL
What is the meaning of LIKE '%0%0%'

Feature begins with two 0's
Feature ends with two 0's
Feature has two 0's in it, at any position
Feature has more than two 0's

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Introduction to SQL
Indexes can usually be created for both primary and secondary keys.

False
True

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Introduction to SQL
'AS' clause is used in SQL for

Join operation.
Selection operation.
Projection operation.
Rename operation.

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Introduction to SQL
There is an equivalent join expression that can be substituted for all subquery expressions.

True
False

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