摘要：With wining initiative and more commercial opportunity in furious market, business intelligence is needed to guidance business behavior and to assist decision-making. Data warehouse, as the data platform for support of DSS, the research and application have been hot issues among the theories and practice circle in china. This study come from the data warehouse construction in the relate department of XX telecom. It introduced the key technical problem as for the understanding of the data warehouse construction, the basic architecture of system, development model and method, the choice of data granularity and so on. Talk about the application of data warehouse and its orientation. However, because of the complexity of the field itself, data warehouse construction and successful application will not be easy, requires constant effort.
关键词：Data granularity ; data integration and extraction ; data warehouse ; OLAP ; software development model ;
