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? Consistent read Dirty read Phantom read Nonrepeatable read Consistent read Dirty read Phantom read Nonrepeatable read ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Two transactions that run concurrently and generate results that are consistent with the results that would have occurred if they had run separately are referred to as serializable transactions. True False True False 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: durable. atomic. consistent. isolated. durable. atomic. consistent. isolated. ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following refers to a cursor type where changes of any type and from any source are visible? Static Dynamic Keyset Forward only Static Dynamic Keyset Forward only ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases The lost update problem is when User A reads data that have been processed by a portion of a transaction from User B. False True False True 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. False True False True ANSWER DOWNLOAD EXAMIANS APP
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