Data Science is a new technology, which is basically used for 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 Online Training provides a clear understanding of work in big data, analytical tool R. Also, provide the analyses big data. It gives the clear idea of understanding of data, transforming the data. Also, it helps is visualizing the data, exploratory analysis, understanding of null value. It used to impute the value with the help of different rules and logic.