SAP BW Course Info : br br SAP BW Online training at BigClasses.com provides you with very quality online training experience. SAP Business Information Warehouse provides data warehouse functionality, a business intelligence platform and also a collection of Business Intelligence tools which enables the businesses to reach the goals. This system accesses the internal and external sources of data into a single repository. In order the retrieve the data very quickly from the large volumes of data it uses a special technique called star schema.