To effectively support XML query, especially the structural query, various encoding schemes have been proposed.
为了有效支持XML查询，特别是结构查询，目前已经提出了XML数据的各种编码方案。
XML query includes content query and structural query. The query condition can be represented as a simple path expression (SPE) or a regular path expression (RPE).
XML查询包含内容查询和结构查询，其查询条件可表示为简单路径表达式(SPE)和正则路径路径表达式(RPE)。
In this case, the structural elements are treated as a part of the searchable body of text, and only SQL query syntax is applicable.
在这种情况下，结构化元素会作为可搜索文本的一部分，而且只支持SQL查询语法。
As join operation to relational database, structural join order selection is at the heart of query optimization in an XML database.
和关系数据库中的连接运算一样，结构连接顺序的选择是XML数据库查询优化的核心。
Efficient structural join is the key operation in XML query processing.
有效的结构连接是XML查询处理的关键。
This dissertation discusses the key technology of XML query pattern matching based on structural joins.
这篇论文主要讨论了基于结构化联接的XML查询模式匹配的相关关键技术。
Structural join is the core operation in XML query processing, there have been a number of algorithms proposed for structural join, but all of them could not support query of multiple versions XML.
结构化连接是XML查询处理的核心操作，目前已经提出了许多结构化连接的算法，但都不支持多版本的XML文档。
As the core operation of XML query processing, the efficient implementation of structural join is the key to improve XML query processing.
作为XML查询处理的核心操作，结构连接操作的高效实现是提高查询处理效率的关键。
The basic structural join is a core operation in XML query processing.
基本的结构连接是XML数据库查询处理的一个核心操作。
Through the organization of metadata, it's easy to achieve the digital information's structural storage, orderly organization and effective query.
经过元数据的组织，能实现数字化信息的结构化存储、有序化组织和高效准确的检索；
Structural join is the core operation in XML query processing, and catches the research community's attention.
结构连接是XML查询处理的核心操作，受到了研究界的关注。
As the core operation in XML query processing, structural joining consumes a great deal of time.
在XML数据查询中，结构连接操作占用了大量时间。
Compared with traditional query expansion, XML query expansion is different from traditional query expansion, which expands not only to document content, but also structural expansion.
与传统的查询扩展不同，XML查询扩展不仅要对文档内容进行有效扩展，而且还要考虑结构扩展。
Compared with traditional query expansion, XML query expansion is different from traditional query expansion, which expands not only to document content, but also structural expansion.
与传统的查询扩展不同，XML查询扩展不仅要对文档内容进行有效扩展，而且还要考虑结构扩展。
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