They are database layer, data view layer, control layer, data analysis layer and alternation layer.

系统包括五个层次结构：数据库层、数据视图层、控制层、数据分析层、交互层；

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Linked data, semantic analysis, analytics and data mining all form a layer on top of the content-web that could serve as the foundation for the next series of applications and other added value.

关联数据、语义分析、分析数据挖掘，这些都可以作为下一代网络产品和其它附加值的基础。

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Now, changes to the DBMS format or result set data structure are isolated behind the ObjectFactory layer, and the analysis objects are not affected at all.

现在，DBMS的格式或结果集数据结构的变更被隔离在ObjectFactory层之下，分析对象决不会受到影响。

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