International Journal of Latest Trends in Engineering and Technology (IJLTET)
Big data might be petabytes (1,024 terabytes) or exabyte of data consisting of billions to trillions of records from different sources (e.g. web, sales, customer care, social media, mobile data and so on). Big data refers to relatively large amounts of structured and unstructured data that is difficult to process using traditional Relational DataBase Management System (RDBMS) and software techniques. This paper focuses on big data technologies, applications and commercially supported users. The big data technologies are apache's hadoop file systems map-reduce model and NoSQL (NotonlySQL) databases are discussed in this paper.