摘要： 提出了一种基于区间表示的XML编码方式，设计了相应的关系存储模式，研究了该编码方式对信息查询和信息更新的支持。鉴于XML关系存储下信息更新的困难性，采用基于order-descendan(O-D)的XML编码方式，不仅可以完全支持XPath查询语言的13个查询轴的查询功能，而且通过简单的计算即可有效地支持XML数据的增加和删除，这种简单计算可以在关系存储模式下通过SQL语句方便地实现。
关键词:
XML,
编码,
关系存储,
信息查询,
信息更新
Abstract: An XML encoding based on region-presentation is proposed, correspondingly relational store model is designed, and support to info-query and info-update is researched. Because of the difficulty of info-updating in XML relational storage, an XML encoding based on Order-descendant is applied, which supports not only querying function of 13 query-axes in XPath query language, but also adding and deleting operation of the XML data by simple calculation. This calculation can be realized conveniently in relational store model with SQL language.
Key words:
XML,
Encoding,
Relational storage,
Info-query,
Info-updating
曹耀钦;宋建社;赵 霜;余 宁. 基于O-D的XML编码及对信息查询与更新的支持[J]. 计算机工程, 2007, 33(05): 53-55.
CAO Yaoqin; SONG Jianshe; ZHAO Shuang; YU Ning. Order-descendant-based XML Encoding and Support to Info-query and Info-updating[J]. Computer Engineering, 2007, 33(05): 53-55.