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Introduction to SQL

Introduction to SQL
The condition in a WHERE clause can refer to only one value.

True
False

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Introduction to SQL
SQL can be used to:

query database data only.
create database structures only.
All of these
modify database data only.

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Introduction to SQL
The command to remove rows from a table 'CUSTOMER' is:

DELETE FROM CUSTOMER WHERE ...
DROP FROM CUSTOMER ...
UPDATE FROM CUSTOMER ...
REMOVE FROM CUSTOMER ...

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

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

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Introduction to SQL
The benefits of a standard relational language include which of the following?

Applications are not needed
Reduced training costs
Increased dependence on a single vendor
All of these

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Introduction to SQL
Which one of the following sorts rows in SQL?

ALIGN BY
SORT BY
ORDER BY
GROUP BY

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