ABSTRACT
Big data refers to the massive quantity of data that are excessively large in size; hence, the traditional processing tools cannot manage the same. It is high volume, high velocity, and high variety of information that require advanced technologies to process. This chapter presents a brief introduction to big data, big data analytics, the various categories of big data, and the characteristics that determine the big data, how different technologies are involved in big data analytics and a brief introduction on the tools involved handling big data. This chapter also explains the applications of big data in various fields like health care, banking, marketing, politics, meteorological department, finance, and so on.
