In the not too distant past, data were small and manageable. They (“data” is a plural word like numbers) were easily manipulated with a calculator or pencil and later by a computer. Small data were structured bits of information like tally marks, sales per quarter and percentages. All that information resided comfortably in a database until it was made visual by graphs and pie charts.
Big data differ from older, more familiar and traditional small data in four significant ways.
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