Claude Godart

Software Services for e-Business and e-Society

This book constitutes the refereed proceedings of the 9th IFIP WG 6.1 Conference on e-Business, e-Services and e-Society, held in Nancy, France, in September 2009. The 31 revised papers were selected from numerous submissions. They cover a wide and important variety of issues in e-business, e-services and e-society, including security, trust, and privacy, ethical and societal issues, business organization, provision of services as software and software as services. The papers are organized in topical sections on e-government, security, e-commerce, modelling, user interactions and simulation.

AN EVENT‐BASED APPROACH FOR DECLARATIVE, INTEGRATED AND SELF‐HEALING WEB SERVICES COMPOSITION

Web services are defined to be the software systems that provide interoperable machine‐to‐machine interaction over a network. Individual services may need to be composed and the composition process design, verification and monitoring are thus active and widely studied research directions. However, the traditional approaches are both procedural (and rigid) and do not address the need of integrating these related dimensions using a unified formalism. In this paper, we propose an event‐oriented framework called DISC that is both declarative and serves as a unified framework to bridge the gap between the process design, verification and monitoring. It provides a flexible and highly expressive composition design that can accommodate various aspects such as data relationships and constraints, Web services dynamic binding, compliance regulations, security or temporal requirements etc. Furthermore, the DISC framework allows for instantiating and verifying the composition design and for monitoring the process while in execution.

Customizable Isolation in Transactional Workflow

In Workflow Management Systems (WFMSs) safety of execution is a main need of more and more business processes and transactional workflows are real needs inside enterprizes. In previous works, transactional models consider mainly atomicity as the main issue regarding long term transactions. It rarely consider the fact that many processes may run concurrently and thus access and update the same data. Usually, the main isolation item is the data on which we apply locking approaches and this attitude don’t worry about process dimension. In this work we study more precisely what are the real isolation needs in workflow environment. To realize these needs, we define “Isolation Spheres” inspired from “spheres of control” proposed by C. T. Davies to make a separation of concerns between workflow design and transactional properties specification.