Disparity of produced values from Aggregate Functions
journal of al-qadisiyah for pure science(quarterly),
2007, Volume 7, Issue 3, Pages 326-332
AbstractThe aggregate functions are used in extraction features from groups of data. These functions are varied in nature of produced features that are represented by aggregated values. Our work in this paper is interested with discrete aggregate functions in order to evaluate the degree of closeness the result aggregated values from the source data. To achieve our aim, we use in this paper two discrete aggregate functions; one is conventional function and other is proposed one.
Keywords: aggregate, relational data base, disparity.
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