Managing Multiuser Databases Which of the following occurs when one transaction reads a changed record that has not been committed to the database? Nonrepeatable read Dirty read Phantom read Consistent read Nonrepeatable read Dirty read Phantom read Consistent read ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases The size of a lock is called: lock granularity implicit lock exclusive lock shared lock lock granularity implicit lock exclusive lock shared lock ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases A phantom read occurs when a transaction rereads data it has previously read and finds modifications or deletions caused by a committed transaction. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases A durable transaction is one in which all committed changes are permanent. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases An exclusive lock locks the item from change but not from read. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following disallows both dirty reads and nonrepeatable reads, but allows phantom reads? Read uncommitted Read committed Repeatable read Serializable Read uncommitted Read committed Repeatable read Serializable ANSWER DOWNLOAD EXAMIANS APP
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