Database Recovery
Database types
Volatile
Stable
Recovery techniques
Immedia (in place) update
Deferred update
Shadow paging
Transaction
Recovery manager
Automic
Durability
Failure cause
System Crashes
Natural disasters
Sabotage
Unitentional destruction
Software failure
Media failure
Recovery Facilities
Checkpoint
Logging
Actions
Begin
Read
Write
Main memory
Information update
Transaction records
Before immedia
After immedia
checkpoint records
Backup
Reovery manager
Fetch
Flush