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
Inconsistent backup
Differential backup

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Managing Databases with Oracle
Which statement about sequences is not true?

Sequences guarantee valid surrogate key values.
A sequence is an object that generates a sequential series of unique numbers.
NextVal and CurrVal are both sequence methods.
Sequences are most often used to provide values for surrogate keys.

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