Related Questions

When one transaction reads a changed record that has not been committed to the database a filthy read occurs.
A True
B False
Which of the following disallows both dirty reads and nonrepeatable reads, but allows phantom reads?
A Read committed
B Read uncommitted
C Repeatable read
D Serializable
Which of the following allows dirty reads, nonrepeatable reads and phantom reads to occur?
A Read committed
B Read uncommitted
C Repeatable read
D Serializable
Which of the following occurs when a transaction rereads data it has previously read and finds modification or deletions caused by a committed transaction?
A Nonrepeatable read
B Phantom read
C Dirty read
D Consistent read
A phantom read occurs when a transaction rereads data it has previously read and finds modifications or deletions caused by a committed transaction.
A True
B False
The boy reads a book.------ what kind of verb 'reads' in the sentence is?
A Principle verb
B Auxiliary verb
C Transitive verb
D Intransitive verb
The boy reads a book. What kind of verb 'reads' in the sentence is?
A Principal verb
B Auxiliary verb
C Transitive verb
D Intransitive verb
The boy reads a book. what kind of verb Reads' is
A principal verb
B auxiliary verb
C transitive verb
D intransitive verb
Resource locking is a process to prevent multiple applications from obtaining copies of the same record when the record is about to be changed.
A True
B False
The lost update problem is when User A reads data that have been processed by a portion of a transaction from User B.
A True
B False

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