Managing Multiuser Databases The overall responsibility of the DBA is to facilitate the development and use of the database. True False True False 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 The advantage of optimistic locking is that: 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. the lock is obtained before the transaction has processed. the lock never needs to be obtained. ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following allows dirty reads, nonrepeatable reads and phantom reads to occur? Serializable Read uncommitted Repeatable read Read committed Serializable Read uncommitted Repeatable read Read committed ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following locks the item from access of any type? Shared lock Implicit lock Exclusive lock Explicit lock Shared lock Implicit lock Exclusive lock Explicit lock ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases A transaction is a series of actions to be taken on the database so that either all of them are performed successfully or none of them are performed at all. False True False True ANSWER DOWNLOAD EXAMIANS APP
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