Data Science is a new technology, which is basically used to apply critical analysis. It utilizes the potential and scope of Hadoop. It also helps fully in R programming and machine learning implementation. It is a blend of multiple technologies like data interface, algorithm. It helps to solve an analytical problem. Data Science provides a clear understanding of work in big data, analytical tool R. Also, it provides the analyses of big data. It gives a clear idea of understanding of data, transforming the data. Also, it helps in visualizing the data, exploratory analysis, understanding of the null value. It used to impute the value with the help of different rules and logic.