chapter  3
10 Pages

Difference Between Data Warehouses and Traditional Operational Systems

Subject Oriented In a data warehouse, data is organized according to subject instead of applications (Chaudhuri and Dayal, 1997; Gardner, 1998; Tryfona et al., 1999). A subject area

identifies and groups processes that relate to a logical area of the business. In a data warehouse, the information from across functional departments or business units is organized in a manner that is subject oriented, with an enterprise view. is subjectoriented detailed transactional data allows corporate users to drill down into the depth of their business operations for data mining and business intelligence activities.