Abstract
Version control of a lot of documents without any tools would be difficult for project participants. The version control system we developed in this research would help them manage versions of drawings. We integrated a relational database system, CAD software and Internet services. The system will give users some information about history of drawings such as modification, printout and approval, and it will also notify users when external reference drawings are modified or a violation occurs. Systems like this can be a useful tool to arrange drawings made by some participants.