Big Data and Hadoop Interview Questions and Answers What is BIG DATA? Big Data represents a huge and complex data that is difficult to capture, store, process, retrieve and analyze with the help of on-hand traditional database management tools. What are the three major characteristics of Big Data? According to IBM, the three characteristics of Big Data are: Volume: Facebook generating 500+ terabytes of data per day. Velocity: Analyzing 2 million records each day to identify the reason for losses. …