Interface automata-based formal model for BPEL4WS Web service composition

This paper introduced basic syntax of interface automata.For the most important kind of specification of specifying and executing workflow-based Web service composition-business process execution language for Web services(BPEL4WS),defined the conception mapping between interface automata and BPEL4WS and presented a interface automata-based formal model for BPEL4WS.Introduced the model verification method through a case study.