Also this dissertation studies the current research on XML querying, and points out that most researches of XML querying focus on the region encoding and the indexing.
论文还研究了XML查询技术的现状，指出目前大部分查询技术的研究都集中在各种区间编码和索引技术。
Based on the comparing of several kinds of XML indexing, this dissertation points out the advantages and disadvantages and expounds the importance of Schema to XML querying.
在比较研究了XML索引技术的基础上，提出了目前各种索引技术的优缺点，阐述了模式对于XML查询的重要性。
XAPI covers storage, retrieval, modification, and querying of data in an XML database, with support for transaction management.
XAPI涵盖了XML数据库中数据的存储、检索、修改和查询，以及对事务管理的支持。
The mapping and transformation options described in this section show the flexibility and scalability in querying XML data sources.
本小节描述的映射和转换选项显示出查询XML数据源的灵活性和可扩展性。
These factors can cause considerable performance bottlenecks when querying XML data sources without the VVM caching feature.
如果查询XML数据源时没有VVM缓存特性，这些因素将会造成很大的性能瓶颈。
The output XML message is created from querying XML data in DB2.
输出的XML消息是从查询DB 2中的XML数据创建的。
When you're just querying XML documents on a local disk (which is what this article focuses on), setting up a connection is pretty straightforward.
如果只需要查询本地磁盘上的XML文档(也是本文的重点)，连接的设置非常简单。
This is great for querying XML databases.
这非常适合查询XML数据库。
IBM DB2 supports storing, managing, and querying entire XML documents or document fragments.
IBMDB 2支持存储、管理和查询整个XML文档或文档片段。
XML tasks: creating and maintaining tables and views with XML data; creating and tuning XML indexes; querying and viewing XML documents; storing and managing XML schema documents.
XML任务：创建并维护具有XML数据的表和视图；创建并调优xML索引；查询并查看XML文档；存储并管理XML模式文档。
Furthermore, querying decomposed XML data can be challenging, often requiring multi-table joins.
另外，查询分解的XML数据很困难，常常需要多表联结。
The following table summarizes the respective advantages of the four different options for querying XML data.
下表总结了查询XML数据的四种不同可选方案的各自优点。
The idea of storing and querying XML in databases came about after the use of XML for data exchange became prevalent.
随着XML被广泛用于数据交换，开始出现了在数据库中储存和查询XML的想法。
XML has spawned a set of related standards for querying and transforming data.
XML已有一套查询和变换数据的相关标准。
While these methods can work well for relational data, they are not suitable for querying XML data.
尽管这些方法都适合关系数据，但是不适合查询XML数据。
It also demonstrates how querying the XML data in the database is no different from querying the data in the application.
还演示如何按照在应用程序中查询数据的相同方式查询数据库中的XML数据。
This gives a benefit while querying the data if XML data is accessed as often as other relational values in the table.
如果XML数据的访问频率与表中的其他关系值相当，那么这将提高查询数据的性能。
In general, the "right" approach for querying XML data needs to be chosen on a case-by-case basis, taking the application's requirements and characteristics into account.
一般而言，查询XML的“正确”途径需要在“逐个处理”的基础上加以选择，需要考虑应用程序的具体需求和特征。
By working with the XML data under collections and results, the programmer only has to know the XML data model and the W3C standards for navigating, transforming, and querying the XML data.
通过处理集合和结果中的XML数据，程序员只需了解XML数据模型以及用于导航、转换和查询XML数据的W3C标准。
However, the subject of this article is XPath, a query language designed for querying XML documents.
但本文的主题是XPath，一种为查询XML文档而设计的查询语言。
DB2 Viper introduces a new powerful and yet simple environment for storing, indexing, querying, and publishing both relational and XML data.
DB 2Viper为存储、索引、查询和发布关系数据和XML数据提供了一个强大而又简单的新环境。
XQuery enables not only querying of XML documents, but also transformation.
XQuery不仅能够查询XML文档，并且还能转换文档。
BPEL Repository enables a mechanism for storing any XML data and retrieving this data through an object-oriented querying mechanism.
BPELRepository提供了一个通过面向对象的查询机制来存储任何XML数据并进行检索的机制。
XGrind is the first XML-conscious compression scheme to support querying without the need for a full decompression of the compressed XML document.
XGrind是第一个与XML 有关的压缩方案，支持查询且无需完全解压整个被压缩的 XML文档。
XQuery is a powerful query language, specifically designed for querying XML data.
XQuery是一种强大的查询语言，专为查询XML数据而设计。
For advanced XML users, XQuery can be very helpful in querying and extracting content out of large XML documents.
对于高级XML用户，XQuery在查询和从大型XML文档抽取内容时非常有帮助。
And since the prevailing standard for querying XML is with XQuery, it makes even more sense to use that technology when establishing the view.
由于XQuery是目前用于查询XML的流行标准，因此用这种技术建立视图就更加有意义了。
If the elements in the XML document are in a namespace, then the XPath expression for querying that document must use the same namespace.
若xml文档中的元素在名称空间中，查询该文档的XPath表达式必须使用相同的名称空间。
Universal Services are a simple but fixed set of database operations that allow the querying and modification of XML data, stored in a pureXML column of a DB2 database.
UniversalServices是一组简单但固定的数据库操作，它们允许查询和修改储存在DB 2数据库的purexml列中的数据。
XPath and jQuery have powerful querying semantics for selecting nodes from well-formed XML documents, including XHTML pages.
对于从格式良好的XML文档(包括xhtml页面)选择节点，XPath和jQuery具有强大的查询语义。
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