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Introduction to SQL

Introduction to SQL
Which of the following command makes the updates performed by the transaction permanent in the database?

ROLLBACK
DELETE
COMMIT
TRUNCATE

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

REMOVE
DELETE
ALTER
COLLAPSE

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

GROUP BY
ORDER BY
ALIGN BY
SORT BY

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Introduction to SQL
Most companies keep at least two versions of any database they are using.

False
True

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Introduction to SQL
The FROM SQL clause is used to...

specify search condition
specify range for search condition
None of these
specify what table we are selecting or deleting data FROM

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