Recovering a Database Via Reprocessing Involves

question 39

Multiple Choice

Recovering a database via reprocessing involves:

• A)restoring the database from the save and reprocessing all the transactions since the save.
• B)restoring the database from the save and reapplying all the changes made by transactions since the save.
• C)undoing the changes made by erroneous or partially processed transactions and restarting the valid transactions that were in process at the time of the failure.
• D)recreating the database by reentering all of the data from the beginning,and then reprocessing all of the transactions.
• E)synchronizing the database and the transaction log by checkpointing.

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Definitions:

Null Hypothesis

A hypothesis that suggests there is no statistical significance in the given set of observations, often denoted as H0 and used as a default hypothesis to be tested.

Significance Level

A threshold chosen by the researcher which denotes the probability of rejecting the null hypothesis when it is actually true, often denoted as alpha.

SRS

A simple random sample, which is a subset of a statistical population in which each member of the subset has an equal probability of being chosen.

Significance Test

A statistical procedure for testing a hypothesis to determine if there is enough evidence to reject the null hypothesis.