We discovered that there is a point where aggregate index costs—more-expensive INSERT and DELETE operations, for example—outweigh a new index's query speed-up benefit.
This paper introduces a solution solving the problem of low response speed of aggregate operations in statistical database (SDB_s).
本文主要论述利用专家系统技术解决统计数据库中聚集操作响应速度慢和瓶颈问题。
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The aggregate index that appears the variation magnitude and variation speed and the variation nature is proposed to describe quantitatively the variation nature and complexity of heterogeneity.