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 Nonrepeatable read Phantom read Dirty read TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following refers to a cursor type that when the cursor is opened, a primary key value is saved for each row in the recordset; when the application accesses a row, the key is used to fetch the current values of the row? Dynamic Keyset Static Forward only TRUE ANSWER : ? YOUR ANSWER : ?
The size of a lock is called: exclusive lock lock granularity implicit lock shared lock TRUE ANSWER : ? YOUR ANSWER : ?
A cursor type in which the application can only move forward through the recordset is called: static. keyset. forward only. dynamic. TRUE ANSWER : ? YOUR ANSWER : ?
When two transactions are being processed against the database at the same time they are termed concurrent transactions. True False TRUE ANSWER : ? YOUR ANSWER : ?
Locks placed by command are called ________ . exclusive locks shared locks explicit locks implicit locks TRUE ANSWER : ? YOUR ANSWER : ?
The size of the lock is referred to as the lock granularity. False True TRUE ANSWER : ? YOUR ANSWER : ?
An exclusive lock locks the item from change but not from read. True False TRUE ANSWER : ? YOUR ANSWER : ?