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利用缓存优化关系数据的XML发布
引用本文:邱洋,岳昆,郭志懋,王晓玲,周傲英.利用缓存优化关系数据的XML发布[J].计算机研究与发展,2004,41(10):1802-1808.
作者姓名:邱洋  岳昆  郭志懋  王晓玲  周傲英
作者单位:1. 复旦大学计算机科学与工程系,上海,200433
2. 复旦大学计算机科学与工程系,上海,200433;云南大学计算机科学与工程系,昆明,650091
基金项目:国家“八六三”高技术研究发展计划基金项目 ( 2 0 0 2AA1160 2 0 )
摘    要:随着Web的不断发展,XML逐渐成为Web数据表示和交换的标准.但是大量企业数据仍然存储在关系数据库中,因此必须将关系数据发布成为XML文档并且传送给合作者.目前广泛采用的发布方式是针对每个用户的请求独立完成的.但是这样的发布方法忽视了用户发布请求所具有的相似性,导致发布成本高和响应时间长的问题.基于用户发布请求的相似性,提出了挖掘频繁发布请求并且缓存中间结果的解决方法.当新的发布请求发出时就可以利用缓存的中间结果,从而在很大程度上降低响应时间.初步实验研究表明提出的方法具有较高的效率.

关 键 词:XML  发布  属性转换文法  发布请求树  发布根子树  频繁发布根子树

Optimizing the Publishing from Relational Data to XML with Caching Technique
QIU Yang ,YUE Kun ,GUO Zhi Mao ,WANG Xiao Ling ,and ZHOU Ao Ying.Optimizing the Publishing from Relational Data to XML with Caching Technique[J].Journal of Computer Research and Development,2004,41(10):1802-1808.
Authors:QIU Yang  YUE Kun    GUO Zhi Mao  WANG Xiao Ling  and ZHOU Ao Ying
Affiliation:QIU Yang 1,YUE Kun 1,2,GUO Zhi Mao 1,WANG Xiao Ling 1,and ZHOU Ao Ying 1 1
Abstract:With the development of Web, XML has become the de facto standard for data representation and exchange However, a large amount of corporate data resides in RDBMSs Hence, it is inevitable to publish relational data as XML documents and then transfer them to partners At present, widely used publishing is to be done specifically for each customer However, this publishing procedure ignores similarities among publishing requests of the customers, which leads to high publishing cost and long response time Proposed in this paper are algorithms of mining frequent publishing requests and caching intermediate results based on the similarities of publishing requests When a new publishing request comes, the response time can be reduced to a great extent by utilizing the intermediate results Preliminary experiments show that the method is very efficient
Keywords:XML  publishing  ATG  PRT  PRST  FPRST  
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