In this Data Explosion age, management of huge data has become a Hercules task. The exact answer for this objective is Data Mining. Large business transactions, scientific data, satellite pictures, text reports and military intelligence and other digital data are generating far so much data and information, which is difficult to handle with conventional computing methods. Data analysis and information retrieval are fractional part of decision-making. The huge collections of data are promoting us to have better managerial tools and techniques.