When one transaction reads a changed record that has not been committed to the database a filthy read occurs.
The size of a lock is referred to as lock sizing.
When two transactions are being processed against the database at the same time they are termed concurrent transactions.
Which of the following occurs when a transaction rereads data it has previously read and finds modification or deletions caused by a committed transaction?
Dirty read, nonrepeatable, and phantom reads are not possible in this instance.
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