ff928931__Data_Is_to_Produce_Small_Data__Big_Data
[0] Introspection [Small Data] Individual data points are identified by their row and column location within a spreadsheet or database table. If you know the row and column headers, you can find and specify all of the data points contained within. [Big Data] 
Unless the big data resource is exceptionally well designed, the contents and organization of the resource can be inscrutable, even to the data managers. Complete access to data, information about the data values, and information about the organization of the data is achieved through a technique herein referred to as introspection.
The Most Common Purpose of Big Data Is to Produce Small Data
Big Data