Design of Main Memory Database System/Recovery

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Recovery in DBMS means recovering the database. That is restoring the database to a state that is known to be consistent after some failure that makes the database inconsistent.

There are many things which can go wrong in a database environment. The following sections discuss about most important failure modes

  1. Hard Disk Failure
  2. Process Failure - software errors
  3. System Failure - power loss
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