Question: Recovering a database via rollforward involves: a . Re - creating the database by re - entering all of the data from the beginning, and

Recovering a database via rollforward involves:"

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creating the database by re

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entering all of the data from the beginning, and then reprocessing all of the transactions.

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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.

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Restoring the database from the save and reprocessing all the transactions since the save.

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Restoring the database from the save and reapplying all the changes made by transactions since the save.

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