As per available reports about 55 journals, 1841 Conferences, 59 workshops are presently dedicated exclusively to and about 238000 articles are being published on the current trends in data mining. In terms of research annually, USA and Europe are some of the leading countries where maximum studies related to data extraction are being carried out. As reported in “Data Mining” by Doug Alexander Data mining is a powerful new technology with great potential to help companies focus on the most important information in the data they have collected about the behavior of their customers and potential customers. It discovers information within the data that queries and reports can't effectively reveal. Data mining, or knowledge discovery, is the computer-assisted process of digging through and analyzing enormous sets of data and then extracting the meaning of the data. Data mining tools predict behaviors and future trends, allowing businesses to make proactive, knowledge-driven decisions. Data mining tools can answer business questions that traditionally were time consuming to resolve. They scour databases for hidden patterns, finding predictive information that experts may miss because it lies outside their expectations.