PURPOSE: To obtain a data processing system and a method capable of acquiring detailed information for correlation among plural data to be processed.

CONSTITUTION: At the time of outputting data DA, a 1st data processing part 21 registers data execution history for the output of the data DA in a data utilization history file FA. At the time of inputting the data DA and outputting data DB, a 2nd data processing part 22 registers execution history for the input of the data DA in the file FA and registers also execution history for the output of the data DB in a data utilization history file FB. At the time of inputting the data DB and outputting data DC, a 3rd data processing part 23 registers execution history for the input of the data DB in the file FB and registers also execution history for the output of the data DC in a data utilization history file FC.