Exploiting data-distribution patterns in modeling tuple selectivities in a database


To estimate the number of tuples satisfying a certain query, a data-distribution model is proposed. The model is based on a discrete approximation of the data space and belongs to the class of nonparametric models. Using texture-analysis techniques applied to the multidimensional data space, it is proposed that a segmentation of this space be obtained as a… (More)
DOI: 10.1016/0020-0255(93)90038-N


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