continuing its normal operations at that point of time. Thus, availability refers to both the resilience
of the DBMS to various types of failures and its capability to recover from them. In contrast with
reliability, availability is applicable for repairable systems. In distributed recovery management,
reliability and availability are two related aspects. It is accepted that it is easier to develop highly
available systems, but it is very diffi cult to develop highly reliable systems.
10.2 Failures in a Distributed Database System
To design a reliable system that can recover itself from failures, it is necessary ...
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