A Model for Advanced Query Capability Description in Mediator Systems.
Alberto Pan-Bermudez, Paula Montoto, Anastasio Molano, Manuel Álvarez, Juan Raposo, Ángel Viña · 2002
Abstract: Mediator systems aim to provide an unified global data schema over distributed heterogeneous structured and semi-structured data sources. These systems must deal with limitations on the query capabilities of the sources. This paper introduces a new framework for representing source query capability along with the algorithms needed to compute the query capabilities of the global schema from sources. Our approach for computing query capabilities is able to support a richer capabilities representation framework than the ones previously presented in the literature. We show that those approaches are insufficient to properly represent many real sources, and how our approach can solve those limitations. 1.