A Query Paradigm for Web Services

摘要

The widespread adoption of XML standards has prompted an intense activity to address Web services research issues. The ability to efficiently access and share Web services is a critical step towards the full deployment of the new on-line economy. In this paper, we present a new query paradigm over Web services. Queries are resolved by combining the invocations of several Web service operations. A three- level query scheme allows the expression of database-like queries and their transformation into service execution plans bearing on actual Web service operations. We also introduce a hierarchical matching process between operations allowing the expansion of the solution space to similar and partial answers.