SQL Server Transaction Isolation LEVEL

Problems caused by concurrent transactions
issues	description	results            &NBSP td>	fix
Missing updates	A read-B read-A change-B change	A change is missing	READ UNCOMMITTED
Dirty Read	A change-B read-a rollback	B- Read Invalid value	READ COMMITTED
Non-stressed	A Read-B change -A Read	A- Read inconsistency	Repeatable READ
Non-stressed	A Read-B change -A Read	A- Read inconsistency	SNAPSHOT
Phantom reading	A Read-B and delete -A read	A Read more or less	SERIALIZABLE

SQL Server Transaction Isolation LEVEL