International Journal of Computing Science and Information Technology (IJCSIT)
Database mining is defined as the process of extracting for useful, previously unknown, and indirect information from vast amount of data by efficient knowledge discovery techniques. Naturally such a process may open up new conclusion channels, detect new intrusion technique, and create new security issue. New security issues and research problems are detected and identified. Finally an individually well-developed theory, rough set theory, has been discussed and some needed applications to security problems are discussed.