Rapid development of applications in data mining

The development of Information Technology has generated large amount of databases and huge data in various areas. Loose coupling is adapted in Data Mining System, since it can fetch any portion of data stored in database by more flexibility and in efficient manner. Therefore the Data mining system can be classified according to the kinds of databases mined, the kinds of knowledge mined, the techniques used or the application adapted. The traditional method is used to analyse data manually for patterns for the extraction of knowledge. In Banking, Health care, marketing, Science there will be a data analyst to work with data and scrutinizing the final role of decisions. This work is done by Data Mining. Data mining application can be generic or domain specific. It allows reusability in a feasible way and finally it makes possible to build large and scalable system. Applications of Data mining in computer security are designed to meet the needs of a professional audience composed of researchers and practitioners in various fields. This paper gives the overview of Data mining system and few of its applications. Data mining is becoming a technology in activities as diverse as using historical data to predict the success of marketing.