The units of work provided by database transactions help Brother Cell Phone List enterprises maintain their data integrity even if a number of database tasks remain pending or incomplete subsequent at the time of database failure. The transactions are designed such that Brother Cell Phone List they either complete a task in its totality or produce no effect if a specific transaction remains incomplete. Moreover, a typical transaction system is designed such that, each transaction is completely isolated from any and all transactions occurring in the database and at the same time, the results obtained Brother Cell Phone List from a transaction is required to comply with all restrictions imposed on the database.
The major properties of a database transaction or the general Brother Cell Phone List rules governing a database transaction are as follows: Atomicity This refers to the "all or nothing" feature of a database transaction according to which the changes in a database Brother Cell Phone List occur only if a specific transaction is completed and no change in the database occurs if the transaction remains incomplete. The term refers to the fact that a specific transaction appears to be Brother Cell Phone List indivisible to an external observer and an aborted transaction leaves behind no trace of its existence.
Consistency Each database transaction is required to Brother Cell Phone List adhere to any and all rules implemented for maintaining database integrity and minimizing the risk of database failure. Each transaction is thus required to transform the database from one consistent state to another. Offshore software development companies engaged in Brother Cell Phone List programming database transaction ensure that such transformation occurs in a consistent manner and performs the correct functions. If a transaction is aborted prior to completion, the database continues to Brother Cell Phone List remain in a consistent state as no trace of the aborted transaction would be available in the database.