What is rollback and recovery in databases?
Rollback and recovery are techniques used to restore a database to a previous state after a failure or error.
Can you explain how rollback works?
Rollback undoes changes made during a transaction, reverting the database to its last consistent state.
What are the different recovery methods?
Common recovery methods include full backup, incremental backup, and point-in-time recovery.
How do these methods impact database performance?
Recovery methods can affect performance; for example, frequent backups may slow down transactions but ensure data safety.
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