With the correlation it operates more like a user-defined relational operator.

由于这一层关系，它操作起来更像是一个用户定义的关系操作符。

The previous example creates two dictionaries and uses them to test the < relational operator.

前面的示例创建两个 dictionary 并使用它们测试 < 关系操作符。

An operation can be a relational operator, a system - or user-defined function, or an SQL operator, such as GROUP BY, ORDER BY, and so on.

操作可以是一个关系运算符，或者系统或用户定义的函数，也可以是一个sql操作符，例如GROUP BY、ORDER BY等。

Like the existing relational index scan operator for relational indexes (IXSCAN), the XISCAN operator performs lookups or scans on XML indexes.

类似于现有的用于关系索引的关系索引扫描操作符(IXSCAN)，XISCAN操作符在xml索引上执行查找或扫描。

Complete the following steps to add the second XML Relational Mapping operator.

完成以下步骤，添加第二个XML Relational mapping操作符。

Edit the XML Relational Mapping operator, deleting all column definitions except those required by the target table.

编辑XML Relational mapping操作符，删除目标表不需要的所有列定义。

Map the appropriate source columns from the XML Relational Mapping operator to the target columns of the table, as shown in Figure 22.

将来自xml Relational mapping操作符的适当的源列映射到该表的目标列，如图22所示。

This data flow simply reads the XML data from the source table and uses a single XML Relational Mapping operator to populate the target table directly, as shown in Figure 2.

这个数据流从源表中读取 XML 数据，然后使用一个 XML Relational Mapping 操作符直接填充目标表，见图 2。

Because XML columns cannot participate in Group By clauses, you need to define a second XML Relational Mapping operator (shown on the upper branch of Figure 1).

因为xml列不能参与group By子句，所以需要定义第二个XML Relational Mapping操作符(图1中上方的分支)。

XQuery does not have a special function or operator similar to the relational "between" predicate.

XQuery 没有类似于关系查询中 “between” 谓词的专用功能或操作符。

The extractor operator will extract the association rules form the PMML model created by the Associations operator and provides them in a relational table structure.

这个提取器操作符能从pmml模型(由associations操作符创建)提取关联规则并通过关系表结构提供这些规则。

For a Web application, the data source is commonly a relational database, which has some forms of search built in. (Equality is a simple search operator, as is the SQL operator LIKE.)

对于Web应用程序，数据源通常是一个关系数据库，其中内置了一些搜索功能(Equality是一个简单的搜索运算符，与SQL运算符like一样)。

Note: the query optimizer considers using a functional index when the index expression is used in a relational expression or as an argument to one of the operator class functions.

注意：当索引表达式被用于关系表达式，或作为某个操作符类函数的参数时，查询优化器将考虑使用函数索引。

This operator also extracts the date and time information from a timestamp, populating two relational columns from one XML data value.

该操作符还从时间戳提取日期和时间信息，并用一个XML数据值填充两个关系列。

The second operator extracts a number of relational column values from various XML nodes.

第二个操作符从不同的xml节点提取一些关系列值。

The remote access plan contained in the RPD operator is constructed by the wrapper and contains the necessary specification to invoke the remote request from the non-relational data source.

RPD操作符中的远程访问计划是由包装器构造的，其中包含为调用来自非关系数据源的远程请求所需的规范。

An IXAND plan with all applicable relational and XML indexes appearing under the IXAND operator.

一个IXAND计划，其中所有合适的关系和xml索引出现在IXAND操作符下。

In this paper, a relational database based on nested relation is proposed it supports text storage and text operator. The text query is supported by signature file indexing technology.

本文提出的一个嵌套关系模型支持文本存储和文本检索操作，其中特征文件索引为文本检索提供了技术支持。