The XML files manage some data type mapping so that the correct data types for that engine are used.
XML文件将管理一些数据类型映射，从而使用适于该引擎的正确数据类型。
Data modeling: a wrapper is responsible for mapping the data representation of remote query results into the table format as required by the federated engine.
数据建模：包装器负责将远程查询结果的数据表示映射为联邦引擎所要求的表格式。
xml-content mapping allows to store the xml structure as is within the search engine so it can be used when loading/searching the data.
XML内容映射可以在搜索引擎中存储为XML结构，这样就可以加载和搜索数据。
This mapping allows to map XML data structures into the search engine directly based on XML mapping definitions (driven by xpath).
这种映射允许基于XML映射的定义(用XPath实现)，把XML数据结构直接映射到搜索引擎。
The mapping maps from the XML data structure using xpath expressions into the search engine.
从XML数据结构到搜索引擎的映射是使用XPath表达式来完成。
Staging Engine implements data mapping and transformation. Triggered by BW Scheduler, it sends requests to a source system for data loading. The source system then selects and transfers data into BW.
数据加载引擎执行数据映射与转换，并被BWScheduler触发，它发送加载数据的请求给源系统，然后源系统选择数据并传输到BW。
Staging Engine implements data mapping and transformation. Triggered by BW Scheduler, it sends requests to a source system for data loading. The source system then selects and transfers data into BW.
数据加载引擎执行数据映射与转换，并被BWScheduler触发，它发送加载数据的请求给源系统，然后源系统选择数据并传输到BW。
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