In Which Procedure Does the DBMS Read the Log for the Problem

question 41

Multiple Choice

In which procedure does the DBMS read the log for the problem transactions and apply the before images to undo their updates?

• A) concurrent update
• B) backward recovery
• C) authentication
• D) batch processing

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Definitions:

Unconditioned Response

A natural, unlearned reaction to an unconditioned stimulus that occurs automatically without previous conditioning.

Conditioned Response

A learned response to a previously neutral stimulus through conditioning.

Unconditioned Response

This is an automatic, natural reaction to a stimulus that occurs without prior learning or conditioning.

Sneezing

An involuntary burst of air through the nose and mouth, usually caused by irritation of the nasal mucosa.