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How does the system cope up with a record crash when recovery is going on after the first crash?
Ans: In a system the undo and redo operations are needed to be idempotent to cope up with a record crash while recovery is going on after the crash. Because of the idempotent property, recovery process, whereas in the process of undoing or redoing the actions of a transaction, may fail without a trace, and this kind of failure can take place any number of times before the recovery is done successfully.
what factors might influence a company to outsource its IT infrascture.
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
explain various steps uses in evaluation and maintenance of MIS.
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