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Introduction to SQL

Introduction to SQL
Which of the following join is also called as an 'inner-join'?

Equijoin
None of these
Self-Join
Non-Equijoin

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Introduction to SQL
SQL is a data sublanguage.

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?

APPEND
INSERT
ADD
UPDATE

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Introduction to SQL
SUM, AVG, MIN, and MAX can only be used with numeric columns.

False
True

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Introduction to SQL
The SQL -92 wildcards are ____ and ____ .

percent sign (%); underscore (_)
question mark (?); asterisk (*)
asterisk (*); percent sign (%)
underscore(_); question mark (?)

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Introduction to SQL
SQL provides five built-in functions: COUNT, SUM, AVG, MAX, MIN.

False
True

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