OLAP is a method to access data from data ware house. Almost all organizations or industries apply this tool in their business. The application of this tool is widely operational. In this research paper we shall take a view about the OLAP, retail enterprise and effectiveness of OLAP in sales analysis in retail enterprise in an intelligent way. Also a case study has been developed for the same for better understanding of OLAP in a different way followed by the advantages for the same.