Optimizing Data Warehouse.

Data warehouse is playing more and more an important role in large companies. It collects and processes OLTP data from all functions of the company and keeps them centralized. Product quality specialists can now use the appropriate data in the data warehouse to analyze the quality of the product. After a successful analysis of data on the products they can find rules and patterns that lie behind and thus help analysts and quality management to take better decisions in terms of quality management. In most cases any organization serious about measuring its performances will have one data warehous. In this article we answer the question why the companies need one data warehouse and what are the benefits of building it? [ABSTRACT FROM AUTHOR]