When data, is so large, that it exceeds current processing capacity that most RDBMs (Relational Databases) can handle, you’ve entered into the realm of big data.
Its so big, too fast and will clearly not fit your normal database architecture.
Big Data is not a myth, but a paradigm change, an era affecting how businesses and corporations deal with terabytes of massive data that exist today.
Within it lie patterns of information which can be of great value and useful for critical business decision.
With this information businesses can predict customer behavior, influence what they want and possibly with little effort promote sales and buyer seller interaction.
Simply put, with Big data and the right processing power and tools, we can carry out analytics that will enable us make informed business decision.