An EREC framework for e-contract modeling, enactment and monitoring
Data & Knowledge Engineering - Special issue: Contract-driven coordination and collaboration in the internet context
ICEC '05 Proceedings of the 7th international conference on Electronic commerce
Flows and views for scalable scientific process integration
InfoScale '06 Proceedings of the 1st international conference on Scalable information systems
Utilizing the interactive techniques to achieve automated service composition for Web Services
Journal of High Speed Networks
Journal of Database Management
A graph distance based metric for data oriented workflow retrieval with variable time constraints
Expert Systems with Applications: An International Journal
Similarity assessment and efficient retrieval of semantic workflows
Information Systems
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Assembling a coherent view of distributed heterogeneous information and information processing resources is a challenging and important process for inter-organizational collaboration and service provision. We refer to this process as information integration. However, traditional information integration approaches do not consider human intervention and exceptions, such as obtaining access approvals from service providers. Therefore, we propose a workflow-based approach to address this problem. This is particularly suitable in a loosely coupled and autonomous Web services environment. In this paper, we propose an implementation framework of Workflow-based Information Integration (WII) comprise four layers, namely, application layer, workflow layer, service layer, and message layer. In particular, our paper focuses on the workflow layer from the aspects of control-flows, data-flows and exception-flows by using the Business Process Execution Language for Web Services (BPEL4WS), extended with our proposed data-integration and exception-handling assertions. Each service provider provides Web services at the service layer and BPEL4WS orchestrates them together in order to achieve workflow-based information integration plans. The message layer comprises SOAP message specifications. We map information into SOAP messages and link the proposed exception-handling assertions in BPEL4WS to SOAP-fault implementations. Lastly, we demonstrate the feasibility of our approach with a practical healthadministrative information integration case study at the application layer and examine some typical use cases of exceptions.