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Data and Database Administration
The transaction log includes which of the following?
The before-image of a record
The after-image of a record
The before and after-image of a record
The essential data of the record
Correct Answer:
The essential data of the record
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Data and Database Administration
Backward recovery is which of the following?
Backward recovery is used to reverse the changes made by transactions that have aborted, or terminated abnormally.
Incorrect data is easy to detect.
Databases are not the property of a single function or individual within the organization.
With concurrent processing involving updates, a database with concurrency control will be compromised due to interference between users.
Information repositories are replacing data dictionaries in many organizations.
Queries that do full table scans should be avoided.
Mirrored databases are almost always provided in high-availability systems.
Authorization tables contain highly sensitive data and should be protected by stringent security rules.
The restore/rerun technique involves reprocessing the day's transactions up to the point of failure.
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