Data and Database Administration Backward recovery is used to reverse the changes made by transactions that have aborted, or terminated abnormally. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration With concurrent processing involving updates, a database with concurrency control will be compromised due to interference between users. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Information repositories are replacing data dictionaries in many organizations. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Which of the following is the preferred way to recover a database after a transaction in progress terminates abnormally? Switch to duplicate database Reprocess transactions Rollback Rollforward Switch to duplicate database Reprocess transactions Rollback Rollforward ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Concurrency control is important for which of the following reasons? To ensure data integrity when updates occur to the database in a single-user environment To ensure data integrity while reading data occurs to the database in a single-user environment To ensure data integrity when updates occur to the database in a multiuser environment To ensure data integrity while reading data occurs to the database in a multiuser environment To ensure data integrity when updates occur to the database in a single-user environment To ensure data integrity while reading data occurs to the database in a single-user environment To ensure data integrity when updates occur to the database in a multiuser environment To ensure data integrity while reading data occurs to the database in a multiuser environment ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Backward recovery is which of the following? Where the after-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 and before-images are applied to the database Where the after-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 and before-images are applied to the database ANSWER DOWNLOAD EXAMIANS APP
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