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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?

DELETE
ROLLBACK
COMMIT
TRUNCATE

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Introduction to SQL
ORDER BY can be combined with the SELECT statements.

True
False

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

None of these
Self-Join
Non-Equijoin
Equijoin

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Introduction to SQL
'AS' clause is used in SQL for

Rename operation.
Projection operation.
Join operation.
Selection operation.

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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 command undo all the updates performed by the SQL in the transaction?

TRUNCATE
ROLLBACK
DELETE
COMMIT

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