Managing Multiuser Databases The advantage of optimistic locking is that: the lock is obtained before the transaction has processed. the lock never needs to be obtained. transactions that are best suited are those with a lot of activity. the lock is obtained only after the transaction has processed. the lock is obtained before the transaction has processed. the lock never needs to be obtained. transactions that are best suited are those with a lot of activity. the lock is obtained only after the transaction has processed. ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases A point of synchronization between the database and the transaction log is generally referred to as a stop point. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases The transaction log contains a copy of every database record (or page) after it has changed. These records are called before images. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases The size of a lock is referred to as lock sizing. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases The size of a lock is called: shared lock implicit lock exclusive lock lock granularity shared lock implicit lock exclusive lock lock granularity ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases A transaction in which either all of the database actions occur or none of them do is called: consistent. atomic. durable. isolated. consistent. atomic. durable. isolated. ANSWER DOWNLOAD EXAMIANS APP
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