An approach towards big data — A review

Big Data refer to the analysis of significantly large collection of data that may contain user data, sensor data or machine data. An analyzed Big Data can deliver new business insights, open new markets and create competitive advantages. It consists of data sets that are of large magnitude (Volume), large collection of data which diverse representation include structured, semi structured, or unstructured data (Variety), and should arrive fast (velocity). The real value of data is observed after analyzing i.e. after finding patterns, deriving meanings, making decisions, the ultimate data is available whichever required. This paper discusses the need of Big Data and its analysis with the help of four V's. Further it gives the availability of data in day to day life because of which the requirement of Big Data was generated. The challenges, its privacy, security and analytic are taken into account. The security of Big Data is of major concerned thus different types are cyber attacks and threat detections are need to be discussed.