摘要
近年来,XML已成为信息表示、交换和发布的标准,因此,XML数据查询已成数据库(DB)和信息检索(IR)领域广发研究的问题。XML通常被视为一个标签树,常用的方法是近似查询。由于在用户查询通常有一定的关系约束出现,在分析了用户查询对XML元素和值关系约束之后。
In last years, XML has become the standard for information representation, exchange, and publish. Therefore, querying XML data is a well-explored topic in both Database （DB） and Information Retrieval （IR） fields, which shows proximity search well suited to XML documents, often modeled as a labeled trees. Based on the observations that there are some relationship restrictions in user＇s query, this paper first analysis query restrictions on elements and their values, and then proposes to approximately extract XML elements by using relation restrictions.
出处
《科技广场》
2010年第1期26-28,共3页
Science Mosaic
关键词
近似查询
关系约束
XML
Proximity Search
Relationship Restrictions
XML
