Abstract
Today, the rapid development of information technology, enterprises will be brought into the online analysis and processing, data warehouse and data mining information analysis era. Data warehouses have evolved from a simple theoretical research into a highly practical technology in the field of information management and information systems development in just a few years. Most enterprises in the early process of information technology to build a relatively complete information processing system - one on-line transaction processing system, and accumulated a lot of valuable business information. However, due to the limitations of information management system, most of the online transaction processing system can not provide better support for business management decision-making. To this end, many business executives began to set up their own data warehouse for management decision-making, in response to increasingly severe market competition pressure.
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