Large data (big data), or giant data, refers to the amount of information involved is so large that it can not be through the current mainstream software tools, in a reasonable period of time to achieve the capture, management, processing, and organization of information to help business decision-making for more positive purposes.

In The Age of Big Data, written by Victor Mayer Sch?nberg and Kenneth Kukier, Big Data refers to the use of all data without the use of shortcuts such as random analysis (sampling). Big Data is summarized by five characteristics: Volume, Velocity, Variety, Value, and Veracity.