TY - CHAP T2 - COORDINATION EP - 163 ID - eprints419 N1 - ©Springer-Verlag Berlin Heidelberg 2006. The original publication is available at www.springerlink.com UR - http://dx.doi.org/10.1007/11767954_10 AV - public TI - A WSDL-Based Type System for WS-BPEL N2 - We tackle the problem of providing rigorous formal foundations to current software engineering technologies for web services. We focus on two of the most used XML-based languages for web services: WSDL and WS-BPEL. To this aim, first we select an expressive subset of WS-BPEL, with special concern for modeling the interactions among web service instances in a network context, and define its operational semantics. We call ws-calculus the resulting formalism. Then, we put forward a rigorous typing discipline that formalizes the relationship existing between ws-calculus terms and the associated WSDL documents and supports verification of their compliance. We prove that the type system and the operational semantics of ws-calculus are ?sound? and apply our approach to an example application involving three interacting web services. M1 - 4038 SN - 3-540-34694-5 ED - Ciancarini, Paolo ED - Wiklicky, Herbert Y1 - 2006/// SP - 145 T3 - Lecture Notes in Computer Science PB - Springer A1 - Lapadula, Alessandro A1 - Pugliese, Rosario A1 - Tiezzi, Francesco ER -