Oracle
1Z0-497 · Question #167
Which two statements correctly differentiate undo and redo data? (Choose two.)
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Backup and Recovery Concepts
Question
Which two statements correctly differentiate undo and redo data? (Choose two.)
Options
- AUndo reverses a change, whereas redo re-creates a change.
- BRedo reverses a change, whereas undo re-creates a change.
- CUndo protects against inconsistent reads, whereas redo protects against data loss.
- DRedo protects against inconsistent reads, whereas undo protects against data loss.
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Topics
#undo data#redo data#read consistency#data loss protection