基于Schema的XML混合编码索引查询技术  

QUERY TECHNOLOGY FOR SCHEMA-BASED XML HYBRID CODING INDEX

作　　者：夏刚[1] 刘林静[1] 楼文高[1,2] 

机构地区：[1]上海理工大学光电信息与计算机学院,上海200093 [2]上海商学院,上海200235

出　　处：《计算机应用与软件》2016年第2期33-37,共5页Computer Applications and Software

基　　金：上海高校知识平台"上海商贸服务知识服务中心"建设项目(ZF1226)

摘　　要：Web中存在着越来越多的XML的文档,如何高效地从XML文档查询出有效信息已经成为当前在半结构化数据研究领域中的热点问题。针对XML文档节点进行编码和建立索引结构可以有效地提高查询速度,提出一种SBXHCI(Schema-Based XML Hybrid Coding Indexing)查询技术,该方法充分利用Schema信息对XML文档进行编码和构建索引。对创建索引所花费的时间和空间,查询响应的时间进行大量的实验分析,结果表明SBXHCI方法的编码机制降低了索引结构在时间和空间的资源消耗,并且在路径查询的响应速度有着显著的提高。There are more and more XML documents in Web, how to efficiently query the effective information from XML document has become the hot issue in the field of semi-structured data research at present. Aiming at that coding for XML document nodes and the establishment of index structure can improve the query speed effectively, this paper proposes an SBXHCI （ schema-based XML hybrid coding index） query technology, it makes full use of Schema information to encode the XML documents and to build index. Then we carry out a great deal of experimental analysis on the index creation time, space and query response time. Results show that the encoding mechanism of SBXHCI method reduces the resource consumption of the index structure in time and space, and the response speed of path query has improved significantly.

关 键 词：SCHEMA XML 路径表达式 混合编码 索引 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]