The primary goal of the KDD method is to extract information from massive databases. It accomplishes this by employing Data Mining techniques to determine what is considered knowledge. KDD is defined as a planned, exploratory investigation and modeling of significant data sources. KDD is the systematic process of identifying valid, practical, and understandable patterns in massive and complicated data sets. The base of the KDD method is data mining, which involves the inference of algorithms that analyze the data, build the model, and discover previously unknown patterns. The model is used to extract information from data, and then analyze and forecast it.