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Managing Databases with Oracle

Managing Databases with Oracle
Which of the following is NOT an Oracle-supported trigger?

DURING
INSTEAD OF
BEFORE
AFTER

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Managing Databases with Oracle
What is the type of Oracle backup in which all uncommitted changes have been removed from the datafiles?

Consistent backup
Full backup
Differential backup
Inconsistent backup

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Managing Databases with Oracle
What type of failure occurs when Oracle fails due to an operating system or computer hardware failure?

Media Failure
Instance Failure
Rollback failure
Application failure

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Managing Databases with Oracle
Oracle maintains a System Change Number (SCN) which is a database-wide value that is incremented by Oracle whenever database changes are made.

True
False

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Managing Databases with Oracle
After a table has been created, its structure can be modified using the SQL command:

UPDATE TABLE [TableName].
CHANGE TABLE [TableName].
ALTER TABLE [TableName].
MODIFY TABLE [TableName].

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Managing Databases with Oracle
Indexes are created to enforce uniqueness on columns and to enable fast retrieval by column values.

False
True

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