文档介绍：外文原文
Data warehouse technique
The data warehouse says all
The data warehouse is an environment, not a product. It provides the decision that customer used for current history data supports, these data is very difficult in traditional operation type database or can't get, say more tangibly, the data warehouse is a kind of system construction. Data warehouse than it customer relation the management is a concept that is been familiar with by person, it is 1991 the United States an information engineering learns what house . Inmon Doctor put forward, its definition is" the data warehouse is a support decision the process faces to the topic of, gather of, at any time but change of, the last long data gathers".
The technique system construction of the data warehouse
The data of obtains mold piece: Used for obtaining the data from the source document with the source database, combine the proceeding sweep, delivering, adding it to data warehouse database inside.
· Data management mold piece: Used for the movement of the management data warehouse.
· Delivers mold piece: Used for the other warehouse in direction with assign the data warehouse data in the exterior system.
· The data is in the center a mold piece: The end customer in direction tool that used for the method provides the interview data warehouse database.
· Data interview mold piece: Used for providing the inter