Data mining is a technology that is used for identifying patterns and ways from large quantities of data or other repositories. This technology works in a way that it adopts data integration method to generate data warehouse. Then with the help of algorithm, it extracts useful information. Data mining is powerful technology that is widely used in various applications like e-commerce, educational system, remote sensing and online shopping system. Here, the authors deal with online shopping processes i.e. it is concerned with developing new methods to discover knowledge from online store database.