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DOI:
Journal of Software:1999.10(10):1085-1090

时态数据的变粒度分段存储策略及其效益分析
唐常杰,于中华,游志胜,张天庆,相利民
(四川大学计算机系,成都,610064)
Segmented Storage with various Chronons in Temporal Databases and Efficiency Analysis
TANG Chang-jie,YU Zhong-hua,YOU Zhi-sheng,ZHANG Tian-qing,XIANG Li-min
()
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Received:July 14, 1998    Revised:October 20, 1998
> 中文摘要: 根据时态数据库用户对数据厚今薄古的需求特点,该文提出变粒度分段存储技术,将一个对象的历史分为3个时期,分介质、变粒度存储.文章讨论了分段存储的特殊数据结构、时代转移算法和压缩采样算法.基于微机实用参数的定量分析表明,这一技术将时态存储密度和时态查询速度提高了一个数量级.
Abstract:Based on the usage frequency of the data in temporal database, the storage method with three historical segments is proposed in this paper. The object history is divided into three segments, and stored in different media with various chronons. The special data structure for segmented storage is discussed, the age transfer algorithm and the compress sampling algorithm are proposed. The performance study shows that the time and space efficiency are promoted one magnitudes.
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基金项目:本文研究得到国家自然科学基金和国家教育部留学回国人员启动基金资助。 本文研究得到国家自然科学基金和国家教育部留学回国人员启动基金资助。
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唐常杰,于中华,游志胜,张天庆,相利民.时态数据的变粒度分段存储策略及其效益分析.软件学报,1999,10(10):1085-1090

TANG Chang-jie,YU Zhong-hua,YOU Zhi-sheng,ZHANG Tian-qing,XIANG Li-min.Segmented Storage with various Chronons in Temporal Databases and Efficiency Analysis.Journal of Software,1999,10(10):1085-1090