contact details are scooped up and become part of big data brokers encyclopedia defines big data as a monster so large changes so fast are so varied that they can't be processed with standard software. exactly how much data counts as big is hard to say as it's not stored centrally i three analysts estimate that in the next six years the global data spirit will rise to one hundred seventy five bytes per year one set of buy does equal to one billion terabytes one trillion gigabytes one quadrillion megabytes in comparison a three minute m p three track is around three megabytes in science so one is that the point can store around three hundred thirty three trillion songs processing such masses of data isn't easy there are three aspects to consider. there is the hardware aspect what hardware can handle it. secondly there is the software that process is the data directly. and third there is the algorithms which