The heterogeneous nature of XML data conflicts with the SQL assumption that every expression inside a query returns an array of rows and columns.
SQL假设查询内的每一个表达式都返回一个行和列的数组，而XML数据的异构本质与之相冲突。
You can also convert the data in the expression tree into another domain (such as XML).
你也能将表达式树中的数据转换到其他的域的数据形式(如xml)。
The data is then indexed using techniques such as XML pattern expression indexing, B-tree structural indexing, structural indexing, content or keyword indexing, and others.
然后，数据被使用诸如XML模式表达式索引、B-树结构索引、结构索引、内容或关键字索引之类技术以及其他技术进行索引。
Extended capabilities, like DB2 expression and conditions, can be used to filter the XML data.
可以使用扩展的功能过滤XML数据，比如db2表达式和条件。
This expression is part of the emerging XQuery standard for updating XML data.
这个表达式是即将形成的XML数据更新XQuery标准的一部分。
To do this, an XPath expression is used to identify the portion of the XML data, normally a specific XML text node, that returns each relational data value.
为此，需使用一个XPath表达式来识别由XML数据组成的部分，通常为一个特定的XML文本节点，它会返回所有关系数据值。
The XPath expression must identify a portion of the XML data — that is, a specific XML node — that returns one data value.
（XPath表达式必须指定XML数据的一部分，即一个 XML节点，它必须返回一个数据值）。
Specify the appropriate XPATH expression that DataStage should use to extract information from the input XML data.
指定DataStage用于从输入XML数据提取信息的恰当XPATH表达式。
On the other hand, the parameter "attribute_value" (lines 7-8) is also the result of an expression that gives back the same data type of "element_content", except for XML type.
另一方面，参数“attribute_value”（第 7-8 行）也是一个表达式结果，而该表达式除了对XML类型以外都将返回与“element_content”相同的数据类型。
In our example, the XQuery expression that we pass to XMLEXISTS() is a simple XPath expression where $t is the XML column data: $t/marketinfo/sales/customer/address[zip = "79081"].
在我们的示例中。传递给XMLEXISTS()的XQuery表达式是一个简单的XPath 表达式，其中的 $t 是XML列data：$t/marketinfo/sales/customer/address[zip = "79081"]。
The emphasis applied to the expression "XML data", in the title, is to emphasize that the proposed solution applies to data-centric XML documents only (and not document-centric).
在本文的标题中，对表达式“XML数据”应用emphasis是为了强调这个建议的解决方案只是应用于以数据为中心的XML文档(而不是以文档为中心的)。
Using the concept of domain and the principle of template matching, the domain-relationship expression and its extension are developed to realize the semantic mapping from structured data to XML data.
利用域的概念和模板匹配的原理，引入域关系表达式及其扩展表达式来实现结构化数据到XML数据的语义映射。
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。
In order to enhance the fusion of different space data, and satisfy the system's transplant, geography space data expression based on the XML and its transmission technology are studied.
为了提高异构空间数据的融合、系统可移植性的需要，研究了基于XML的地理空间数据表达及其传输技术。
The technology of either the neutral expression with STEP, or the networked data conveying with the core of XML, has its own characteristics.
以STEP为核心的中性文件数据表达技术，和以XML技术为核心的网络数据表达方式，各有自己的优点。
XML data communication is discussed. Expression of display contents or parameters by XML make display picture data convenient to amend or edit, and easy to transmit and store.
使用XML表达交通诱导显示图片的显示内容以及播放参数，使得显示图片内容可再编辑和修改，同时为数据的传输、存储带来了方便。
At present, XML has become the World Wide Web data expression and the exchange standard.
目前，XML已成为万维网数据表示和交换的标准。
The extensible markup language, XML, is a ideal network language, which is fit for the expression and organization of structured data.
可扩展标记语言XML是一种理想的网络语言，适合于结构化数据的描述和组织。
XML has already become the important standard of the information expression and data exchange on the Internet.
XML已经成为互联网上信息表示和数据交换的一个重要标准。
XML has already become the important standard of the information expression and data exchange on the Internet.
XML已经成为互联网上信息表示和数据交换的一个重要标准。
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