Constraints-Aware Scheduling for Transactional Services Composition

Composite Web services need transactional support to guarantee their consistent and reliable execution.Due to the long running and inter-organizational characteristics of Web services,current approaches for transactional Web services composition adopt compensation mechanism to maintain atomicity.A common assumption is that a compensation operation can be applied at any time with no cost.However,compensation operations are typically associated with temporal and cost constraints,which make compensation mechan...