Managing Multiuser Databases An exclusive lock locks the item from change but not from read. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases The overall responsibility of the DBA is to facilitate the development and use of the database. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases The advantage of optimistic locking is that: the lock is obtained only after the transaction has processed. the lock never needs to be obtained. the lock is obtained before the transaction has processed. transactions that are best suited are those with a lot of activity. the lock is obtained only after the transaction has processed. the lock never needs to be obtained. the lock is obtained before the transaction has processed. transactions that are best suited are those with a lot of activity. ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Locks placed by command are called ________ . shared locks explicit locks exclusive locks implicit locks shared locks explicit locks exclusive locks implicit locks ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases When two transactions are being processed against the database at the same time they are termed concurrent transactions. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Resource locking is a process to prevent multiple applications from obtaining copies of the same record when the record is about to be changed. True False True False ANSWER DOWNLOAD EXAMIANS APP
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