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Erschienen in:
2000 | OriginalPaper | Buchkapitel
Distributed View Expansion in Composable Mediators
verfasst von : Timour Katchaounov, Vanja Josifovski, Tore Risch
Erschienen in: Cooperative Information Systems
Verlag: Springer Berlin Heidelberg
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Data integration on a large scale poses complexity and performance problems. To alleviate the complexity problem we use a modular approach where many heterogeneous and distributed data sources are integrated through composable mediators. Distributed mediators are defined as object-oriented (OO) views defined in terms of views in other sub-mediators or data sources. In order to minimize the performance penalty of the modular approach we have developed a distributed expansion strategy for OO views where view definitions are selectively imported from sub-mediators. Our performance analysis has shown that the distributed view expansion can support modularity through distributed and composable mediators with little overhead.