1.

A transaction commits as soon as its commit log record is written to stable storage at the primary site. This is(a) One Safe(b) Two Safe(c) Two-very Safe(d) Very SafeI have been asked this question in my homework.Question is from Remote Backup Systems in section Recovery System of Database Management

Answer»

Correct option is (a) ONE Safe

The EXPLANATION is: The PROBLEM with this scheme is that the updates of a committed transaction may not have made it to the backup SITE, when the backup site takes over PROCESSING.



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