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 The advantage of optimistic locking is that: the lock is obtained only after the transaction has processed. the lock is obtained before the transaction has processed. transactions that are best suited are those with a lot of activity. the lock never needs to be obtained. the lock is obtained only after the transaction has processed. the lock is obtained before the transaction has processed. transactions that are best suited are those with a lot of activity. the lock never needs to be obtained. ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following occurs when one transaction reads a changed record that has not been committed to the database? Consistent read Nonrepeatable read Dirty read Phantom read Consistent read Nonrepeatable read Dirty read Phantom read ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following occurs when a transaction rereads data it has previously read and finds modification or deletions caused by a committed transaction? Nonrepeatable read Dirty read Phantom read Consistent read Nonrepeatable read Dirty read Phantom read Consistent read ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Database administration refers to a function that applies to the entire organization. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases In this instance, dirty reads are disallowed, while nonrepeatable reads and phantom reads are allowed. Serializable Read committed Read uncommitted Repeatable read Serializable Read committed Read uncommitted Repeatable read ANSWER DOWNLOAD EXAMIANS APP
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