Abstract
Information is usually available in heterogeneous data format and various legacy sources. Interoperability appears to be a major approach for applications to access information. The project ARIANE is devoted to provide end-users with an easy to use and natural access to information databases. In this frame we defined actors able to operate the mediation between end-users and information servers: a "broker" which selects appropriate resources and "mediators" which access data suppliers. We have implemented a web-oriented stand-alone prototype accessing three types of information sources: a bibliographical server, a SQL database server and a hypertext server. Both broker and mediators exploit the Unified Medical Language System knowledge sources, especially the Information Sources Map which allows a way to identify information servers.
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Selected References
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