THE USE OF Carin LANGUAGE AND ALGORITHMS
نویسنده
چکیده
Picsel is an information integration system 1 over sources that are distributed and possibly heterogeneous. The approach which has been chosen in Picsel is to deene an information server as a knowledge-based mediator in which Carin is used as the core logical formalism to represent both the domain of application and the contents of information sources relevant to that domain. In this paper, we describe the way the expressive power of the Carin language is exploited in the Picsel information integration system, while maintaining the decidability of query answering. We illustrate it on examples coming from the tourism domain, which is the rst real case that we have to consider in Picsel, in collaboration with the travel agency Degriftour 2 .
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تاریخ انتشار 1999