Demonstrated how to extract data by writing SQL queries.
演示了如何通过编写SQL查询提取数据。
To extract meaningful data from the Deep Web, search engines have to analyze users' search terms and figure out how to broker those queries to particular databases.
为从深层网络提取有意义的数据，搜索引擎必须分析用户的搜索词，找出如何最佳负责安排这些查询调度给特定的数据库。
The second problem in using extract filter files is in designing useful SQL queries.
在使用提取过滤器文件中的第二个问题是设计有用的SQL查询。
These queries always require sub-document level access to evaluate predicates and to extract document fragments.
这些查询通常需要子文档级访问来运算谓词和提取文档片段。
Data is loaded through standard extract, transform, and load (ETL) connectors, and is then available for queries from business intelligence and analytics applications.
数据通过标准的提取、转换和加载(etl)连接器加载，然后可供商业智能和分析应用程序进行查询。
EPL is a powerful language that enables you, the developer, to implement a comprehensive range of queries to "extract" the events from the incoming data and invoke your business logic (POJO).
EPL是一种强大的语言，可使开发者实现对事件的全程查询(从输入数据中“提取”事件并调用你的业务逻辑(POJO))。
Thus, the configuration of a replica database on which to run queries and extract reports should be a critical part of your database migration efforts.
因此，您执行查询和提取报告的复制数据库的配置是完成数据库迁移的关键部分。
A base filter file that defines all of the SQL queries is initially created, essentially a template extract filter file.
一个定义所有SQL查询的基础过滤器文件在最开始被创建，它本质是上一个模板提取过滤器文件。
To break out the data from each event tag, the parse_event classes use more XPath queries to extract the data.
为了获得各事件标记中的数据，parse_event类使用了更多的XPath查询来提取这些数据。
Very simply, YQL treats individual web services as though they were data tables, allowing developers to formulate SQL-like queries to extract information from them.
很简单，YQL对待各个Web服务就仿佛它们是数据表一样，允许开发人员制定类似SQL的查询以便从其中提取信息。
This provides the logical grouping of SQL queries within a single asset. Together, these SQL queries extract all the related data for a single store asset.
这在一个单独的资产中提供了SQL查询的逻辑分组。
DB2 enables you to write different types of queries to extract both relational and XML data.
DB 2允许编写不同类型的查询来提取关系数据和XML数据。
For example, you know to avoid entering raw SQL queries directly into your views, and you don't mix up HTML tags inside of functions or classes that extract data from the database.
例如，您知道要避免直接在视图中输入原始sql查询，不会在从数据库提取数据的函数或类中混淆html标记。
Beginning SQL Queries is aimed at intelligent laypeople who need to extract information from a database, and at developers and other IT people who are new to SQL.
从SQL查询的目的是智能教友谁需要提取的信息数据库，并在开发和其他IT人谁是新的数据库。
The queries in this object are used to extract values from the event.
这个物件中的查询可用来撷取事件的值。
It designed core components called Query converter, which can change XML queries to XML queries document, it can extract SQL components by JDOM access.
设计了核心组件查询转换器，将XML查询语句定义为XML查询文档，使用JDOM解析xml查询文档，抽取出SQL语句的各个组成部分。
It designed core components called Query converter, which can change XML queries to XML queries document, it can extract SQL components by JDOM access.
设计了核心组件查询转换器，将XML查询语句定义为XML查询文档，使用JDOM解析xml查询文档，抽取出SQL语句的各个组成部分。
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