The logical view of data is a two dimensional table and the physical storage is a single dimensional. Two approaches exist to map two dimensional data on to a single dimensional storage: row oriented and column oriented. Common database applications are developed using traditional row-oriented database systems. Data Mining (DM) is a promising research area, deals with huge data with large numbers of attributes and records. DM algorithms are more analytical in nature with the goal of reading through the data to gain new insight and use it for planning make column oriented database systems more preferable.