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Isolation Level


Posted Date: 07 May 2008    Resource Type: Definitions    Category: General
Posted By: Shilpa Ginode       Member Level: Gold
Rating:     Points: 5



Isolation level represents the locking stretagy employed in the database system for maintaining data consistancies.
The higher the isolation level for transactions in database more the locking strategy will be complex.
The isolation level for any transaction in database system determines whether the transaction will encountered the defined behavious in data consistency.

The American National Standards Institute (ANSI) defines four isolation levels:

1. Read uncommitted (0)
2. Read committed (1)
3. Repeatable read (2)
4. Serializable (3)

Cheers
Shilpa



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