商务智能系统的分层
商务智能系统至多可以分为五层: 数据源层数据转换层数据存取层分析层表示层 数据源层包含的数据有: 1.维护公司日常运作的系统中的数据,包括文本文件、Excel电子表格文件或者Access数据库文件中的数据。2.从外部源中获取的数据。 数据转换层用于从不同数据
商务智能系统至多可以分为五层:
数据源层数据转换层数据存取层分析层表示层数据源层包含的数据有:
1.维护公司日常运作的系统中的数据,包括文本文件、Excel电子表格文件或者Access数据库文件中的数据。2.从外部源中获取的数据。
数据转换层用于从不同数据源提取数据,修改数据使其内部一致,并将修改后的数据载入数据存储系统。
数据存取层是在关系数据库(RDBMS)中创建的数据仓库。数据仓库的下一层是数据集市(data mart)或者联机分析处理数据库(OLAP)。
商务智能系统的分析层用于把数据(data)转换成信息(information),并且向决策者提供了一个便捷的访问渠道。
多维联机分析处理数据库构成了商务智能系统的分析层。
报表及可视化工具构成了商业智能系统的表示层。表示层的应用程序能够查询数据仓库、数据集市或多维联机分析处理数据库。并将数据表示为不同的格式。

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