Which of the following controls would provide the GREATEST assurance of database integrity?

A.
Audit log procedures

B.
Table link/reference checks

C.
Query/table access time checks

D.
Rollback and rollforward database features

Explanation:

Performing table link/reference checks serves to detect table linking errors (such as completeness
and accuracy of the contents of the database), and thus provides the greatest assurance of
database integrity. Audit log procedures enable recording ofall events that have been identified
and help in tracing the events. However, they only point to the event and do not ensure
completeness or accuracy of the database’s contents. Querying/monitoring table access time
checks helps designers improve database performance, but not integrity. Rollback and rollforward
database features ensure recovery from an abnormal disruption. They assure the integrity of the
transaction that was being processed at the time of disruption, but do not provide assurance on
the integrity of the contents of the database.