title: SQL Server - Is there any such thing called 'dirty write'?
body: <p>Does SQL Server allow a transaction to modify the data that is currently being modified by another transaction but hasn't yet been committed? Is this possible under any of the isolation levels, let's say READ UNCOMMITTED since that is the least restrictive? Or does it completely prevent that from happening? Would you call that a 'dirty write' if it is possible?</p>