JET tags requiring a path expression have a select attribute.
需要路径表达式的JET标签有一个select属性。
A path expression in XQuery consists of a series of steps, separated by slash characters.
XQuery中的路径表达式由一系列的“步(step)”组成，之间以斜杠隔开。
This is because the path expression in the query targets only elements that have no namespaces.
这是因为该查询中的路径表达式仅指向没有名称空间的元素。
Navigating XML queries by path expression is the common characteristic of XML query languages.
利用路径表达式导航XML查询是XML查询语言的共同特点。
The same query can be expressed somewhat more concisely as a path expression, as shown in Listing 15.
通过路径表达式可以更简单地表达相同的查询
In many cases, it is possible to write a query by using either a FLWOR expression or a path expression.
在很多情况下，可以任意使用FLWOR表达式或路径表达式编写查询。
The computing efficiency of path expression mostly depends on it's size in the methods of path join.
在路径连接方法中路径表达式的计算效率很大程度上依赖于路径表达式的长度。
Path expression is a common feature of XML query languages. Many indexing methods have been proposed.
路径查询是XML查询的一个主要特征，现已提出了多种XML索引方法。
Whatever names they use, they all match the path expression based on their substitution group head element.
不管使用哪个名称，它们都匹配基于它们的代替组head元素的路径表达式。
The where clause contains a small path expression that navigates from each address to its nested zip element.
where 子句包含一个小型的路径表达式，该表达式从每个地址向下定位到其内嵌的zip 元素。
The most characteristic kind of XPath expression (the one from which XPath gets its name) is the location path.
最有特点的XPath表达式(XPath从中获取其名称)是位置路径。
The documents stored in these rows serve as inputs to a path expression that returns all the nested Comment elements.
存储在这些行中的文档作为一个路径表达式的输出，该路径表达式返回所有内嵌的Comment元素。
Note that the brace expansion of the file path, not the full remote path expression, has been enclosed in double quotes.
请注意，文件路径中展开的大括号（不是完整的远程路径表达式）已用双引号括上。
This example navigates from Account via two steps to create a path expression representing the name of an account's owner.
这个例子通过两个步骤从Account进行导航，创建一个表示帐户所有者的名称的路径。
Research shows that the current relational database technology often inefficient when deal with the regular path expression.
研究表明，当前的关系数据库技术在处理规则路径表示的查询时通常效率不高。
In each axis step of a path expression, the node test comes between the axis and any predicates that might be present for arbitrary filtering.
在路径表达式的每个轴步骤中，节点测试出现在轴和谓词(用于进行任意筛选)之间。
This paper focuses on the query language of XML data, the technologies of path expression optimizing and the query processing of XML data.
本文主要对XML数据库的查询语言、XML数据路径表达式查询的优化技术和XML数据的查询处理技术进行了重点研究。
A path expression, on the other hand, navigates through a hierarchy of XML elements and returns the elements that are found at the end of the path.
而路径表达式则可以在分层的xml元素之间进行导航，并返回在路径末端找到的元素。
The first step of the path expression calls the db2-fn: xmlcolumn function to obtain a list of XML documents from the CONTACTINFO column of the CLIENTS table.
路径表达式的第一步调用db 2 - fn：xmlcolumn函数从clients表的contactinfo列获得一个xml文档的列表。
Path expression is one of the core components of most XML query languages. However, there are few researches on the issue of path expression optimization.
路径表达式是XML数据查询语言的核心部分，但是目前针对路径表达式本身进行优化的研究却相对较少。
You can use XSL: copy-of to copy the whole IDN tree to the output, as before, but you can also use the variable in a path expression without a node-set conversion.
与以前一样，可以使用xsl： copy- of将整个idn树复制到输出，但是也可在路径表达式中使用该变量而不需要转换成节点集。
To facilitate path expression processing, the processing strategy based on path decomposition and structural join operation needs to be investigated more deeply.
为了加速路径表达式处理，基于路径分解和结构连接操作的处理策略需要更深入的研究。
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)。
Each step in a path expression can also contain a predicate that filters the elements that are returned by that step, retaining only elements that satisfy some condition.
路径表达式中的每一步还可以包含一个谓词，用于过滤该步返回的元素，只保留满足某种条件的元素。
Typically, the accessor factory uses a path expression to locate a particular document node or to create a node (or even a complete path of nodes) in the state document model.
通常，访问器工厂使用路径表达式来定位特定的文档节点，或在状态文档模型中创建阶段（甚至阶段的完整路径）。
At first, an algorithm is proposed, which rewrites a regular path expression based XML query as a group of simple path expression based queries using mapping information (mapping graph).
首先提出了一个利用映射信息(映射图)将带正则路径表达式的XML查询重写为一组简单路径查询的算法。
In this paper, we make some researches on the XML query structure and analyze the optimization policy in logical optimization. How to optimize the path expression is discussed primarily in this paper.
本文介绍了XML查询的查询处理结构，分析了逻辑优化的常规策略，重点研究了如何针对路径表达式进行优化。
In this table for each row, there is both a path location expression and an associated named column.
在该表的每一行中，都有一个路径位置表达式和一个相关的指定列。
A filter expression to select file storage areas based on its root directory path can be useful if you have organized your storage devices to be mounted under specific directory paths.
如果已经将存储设备挂载在特定目录路径下，那么根据根目录路径选择文件存储区域的筛选器表达式比较有用。
A filter expression to select file storage areas based on its root directory path can be useful if you have organized your storage devices to be mounted under specific directory paths.
如果已经将存储设备挂载在特定目录路径下，那么根据根目录路径选择文件存储区域的筛选器表达式比较有用。
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