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Introduction to SQL

Introduction to SQL
Which SQL statement is used to delete data FROM a database?

COLLAPSE
REMOVE
ALTER
DELETE

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Introduction to SQL
SELECT DISTINCT is used if a user wishes to see duplicate columns in a query.

False
True

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Introduction to SQL
The ADD command is used to enter one row of data or to add multiple rows as a result of a query.

False
True

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Introduction to SQL
Which of the following is illegal?

SELECT SYSDATE - (SYSDATE + 2) FROM DUAL;
SELECT SYSDATE - SYSDATE FROM DUAL;
None of these
SELECT SYSDATE - (SYSDATE - 2) FROM DUAL;

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Introduction to SQL
The Microsoft Access wildcards are ____ and ____ .

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

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Introduction to SQL
SQL can be used to:

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

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