Data and Database Administration Which of the following is the preferred way to recover a database after a transaction in progress terminates abnormally? Reprocess transactions Rollforward Rollback Switch to duplicate database Reprocess transactions Rollforward Rollback Switch to duplicate database ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Queries that do full table scans should be avoided. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Backward recovery is which of the following? Where the after-images and before-images are applied to the database Where the before-images are applied to the database Switching to an existing copy of the database Where the after-images are applied to the database Where the after-images and before-images are applied to the database Where the before-images are applied to the database Switching to an existing copy of the database Where the after-images are applied to the database ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Failure to control confidentiality may lead to loss of competitiveness. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration The transaction log includes which of the following? The after-image of a record The before-image of a record The before and after-image of a record The essential data of the record The after-image of a record The before-image of a record The before and after-image of a record The essential data of the record ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Locking may cause which of the following problems? Erroneous updates All of these Deadlock Versioning Erroneous updates All of these Deadlock Versioning ANSWER DOWNLOAD EXAMIANS APP
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