作者: P. Tarczy-Hornoch , A. Halevy , P. Mork
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摘要: We present a general model for data integration systems using mediated schema to represent commonalities in the underlying sources. These sources are mapped source descriptions. Users can pose queries against schema, allowing system generate automatically query plan that enumerates and ranks all possible ways which could be answered. apply this approach domain of online genetic databases, demonstrating s ability answer relevant across multiple