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- W2406455750 abstract "A federated data warehouse is a logical integration of data warehouses applicable when physical integration is impossible due to privacy policy or legal restrictions. In healthcare systems federated data warehouses are a most feasible source of data for deducing guidelines for evidence-based medicine based on data material from different participating institutions. In order to enable the translation of queries in a federated approach, schemas of the federated warehouse and the local warehouses must be matched. In this paper we present a procedure that enables the matching process for schema structures specific to the multidimensional model of data warehouses: facts, measures, dimensions, aggregation levels and dimensional attributes. Similarities between warehouse-specific structures are computed by using linguistic and structural comparison. The calculated values are used to create necessary mappings." @default.
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- W2406455750 date "2011-05-24" @default.
- W2406455750 modified "2023-09-28" @default.
- W2406455750 title "Automated Integration of Heterogeneous Data Warehouse Schemas" @default.
- W2406455750 doi "https://doi.org/10.4018/978-1-60566-717-1.ch003" @default.
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