Electronic data management system and method

摘要

An electronic data management system for accurately determining the authenticity of the electronic data and the specification of the source of unauthenticated electronic data. A drawing output processor transmits original electronic drawing data A 1 to an order receiving unit with a tag T attached. The order receiving unit and a manufacturing unit transmit a manufacturer's copied data B 2 (T) copied from the original data A 1 (T) to an inspection unit. The inspection unit transmits the inspection result Fa for the product M, the client's copied data A 2 re-copied from the original data A 1 , and the manufacturer's copied data B 2 (T) to a determination unit. The determination unit compares the tag T extracted from the manufacturer's copied data B 2 with the original value of the client's copied data A 2 and the original value of the manufacturer's copied data B 2 and determines the authenticity of the client's copied data A 2 and the manufacturer's copied data B 2.