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Method, apparatus and programmed medium for approximating the data cube and obtaining approximate answers to queries in relational databases
Method, apparatus and programmed medium for approximating the data cube and obtaining approximate answers to queries in relational databases
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机译:用于近似数据立方体并获得关系数据库中查询的近似答案的方法,装置和程序介质
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摘要
A novel and unique method of approximating the data cube and summarizing database data in order to provide quick and approximate answers to aggregate queries by precomputing a summary of the data cube using histograms and answering queries using the substantially smaller summary. A unique method according to the present invention provides for identifying accurate histogram classes and distributing the space among the histograms on various sub-cubes such that the errors are minimized, while at the same time computer resources are maximized.
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