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Overview of database recovery
2022-07-05 21:58:00 【Short section senior】
Failure is inevitable
Computer hardware failure
Software error
Operator error
Malicious destruction
The impact of the failure
Abnormal interruption of running transaction , Affect the correctness of the data in the database
Destroy the database , Total or partial loss of data
Database recovery
The database management system must have the ability to restore the database from the wrong state to a known correct state ( Also known as a consistent state or a complete state ) The function of , This is how the database recovery management system responds to failures
Recovery subsystem is an important part of database management system
Recovery technology is an important index to measure the quality of the system
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