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Lecture Notes in Computer Science
In this paper we present IBIS (Internet-Based Information System), a system for the semantic integration of heterogeneous data sources, which adopts innovative and state-of-the-art solutions to deal with all aspects of a complex data-integration environment, including query answering under integrity constraints and limitations on source access. IBIS is based on the global-as-view approach, using a relational mediated schema to query the data at the sources. Sources are wrapped so as to providedoi:10.1007/3-540-45017-3_8 fatcat:wo4k4e6jozhpdaybxubdizanui