International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Today people are living in a digital world. Data is generated from sensors, social networking sites and satellites at an unbelievable speed. In this digital world, data is generated and collected at a rapid rate that is exceeding the boundary range. According to IBM, 2.5 quintillion bytes of data are generated every day. The data with high speed, high variety and high volume is known as big data. Integrity, privacy, security, scalability, analysis and storage of data are main challenges of big data.