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一、数据仓库与数据仓库系统数据仓库的概念是为企业能有效地管理和利用多年来积累下来的各种历史数据和统计信息，服务于决策支持背景下提出来的。数据仓库为不同来源的数据提供了一致的数据视图。它将不同介质、不同组织方式的数据集成转换而成为一个一致的分析型数据环境。
First, the data warehouse and data warehouse system The concept of data warehouse is for enterprises to effectively manage and use all kinds of historical data and statistical information accumulated over the years, the service proposed in the context of decision support. Data warehouses provide a consistent view of data from different sources. It will be different media, different ways of organizing data conversion into a consistent analytical data environment.