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Computer method, apparatus and programmed medium for more efficient database management using histograms with a bounded error selectivity estimation
Computer method, apparatus and programmed medium for more efficient database management using histograms with a bounded error selectivity estimation
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机译:计算机方法,装置和程序介质,用于使用具有有限错误选择性估计的直方图进行更有效的数据库管理
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摘要
A computer method, apparatus and programmed medium for optimizing the number of buckets, and thus minimizing the necessary amount of memory space, needed to construct a histogram of a data distribution contained within a computer database with a cumulative error bounded by a specified threshold. The method according to the present invention allows a user to determine the near-minimal memory space necessary to store an approximation of a database with a maximum error measure at most three times that specified by the user to allow the user to maximize computer resources.
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