Compensating Transaction
978-613-4-52704-0
6134527041
112
2010-12-03
39.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The execution of a business process consists of one or more transactions. Each transaction may consist of several individual operations yet, as a whole, it moves the system between consistent states. In the context of a database this is often easily achieved using transactions and the commit/rollback mechanism. For systems without a commit/rollback mechanism available, one can undo a failed transaction with a compensating transaction, which will bring the system back to its initial state. Typically, this is only a workaround which has to be implemented manually and cannot guarantee that the system always ends in a consistent state. The system designer may need to consider what happens if the compensating transaction also fails.
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