Data and Database Administration Backward recovery is which of the following? Switching to an existing copy of the database Where the before-images are applied to the database Where the after-images and before-images are applied to the database Where the after-images are applied to the database Switching to an existing copy of the database Where the before-images are applied to the database Where the after-images and before-images are applied to the database Where the after-images are applied to the database ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration A shared lock allows which of the following types of transactions to occur? Read Delete Insert Update Read Delete Insert Update ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Which of the following is part of an administrative policy to secure a database? All of these Limiting particular areas within a building to only authorized people Authentication policies Ensure appropriate responses rates are in external maintenance agreements All of these Limiting particular areas within a building to only authorized people Authentication policies Ensure appropriate responses rates are in external maintenance agreements ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration A transaction log shows before and after images of records that have been modified by transactions. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Which of the following could cause data to be unavailable? Data becoming lost or inaccurate All of these Planned database maintenance activities The database server Data becoming lost or inaccurate All of these Planned database maintenance activities The database server ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Queries that do full table scans should be avoided. True False True False ANSWER DOWNLOAD EXAMIANS APP
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