Big Data viitab suurele ja mitmekesisele teabekogumile, mis kasvab üha kiiremini. See hõlmab teabe mahtu, selle loomise ja kogumise kiirust ning käsitletavate andmepunktide mitmekesisust. Suured andmed pärinevad sageli andmekaevandusest ja neid saabub mitmetes vormingutes.

Big data refers to the large, diverse sets of information that grow at ever-increasing rates. It encompasses the volume of information, the velocity or speed at which it is created and collected, and the variety or scope of the data points being covered. Big data often comes from data mining and arrives in multiple formats.