In the ___________ scheme, a transaction that wants to update the database first creates a complete copy of the database.(a) Shadow copy(b) Shadow Paging(c) Update log records(d) All of the mentionedI had been asked this question during an online interview.Origin of the question is Recovery in division Recovery System of Database Management

In the ___________ scheme, a transaction that wants to update the data

1.	In the ___________ scheme, a transaction that wants to update the database first creates a complete copy of the database.(a) Shadow copy(b) Shadow Paging(c) Update log records(d) All of the mentionedI had been asked this question during an online interview.Origin of the question is Recovery in division Recovery System of Database Management
Answer» The correct option is (a) Shadow copy Easy explanation - If at any point the TRANSACTION has to be ABORTED, the system merely deletes the NEW copy. The OLD copy of the database has not been affected.

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