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Introduction to SQL

Introduction to SQL
Which SQL keyword is used to retrieve only unique values?

UNIQUE
DIFFERENT
DISTINCTIVE
DISTINCT

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

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

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Introduction to SQL
Which of the following is the original purpose of SQL?

To define the data structures
All of these
To specify the syntax and semantics of SQL data definition language
To specify the syntax and semantics of SQL manipulation language

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

False
True

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Introduction to SQL
SQL data definition commands make up a(n) ________ .

DDL
XML
HTML
DML

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Introduction to SQL
SQL is a programming language.

False
True

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