This was one of the biggest projects on SQL that I participated on. This SQL was implemented in Firebird/Interbase and it was connected to a DLL that improved the speed of certain processes. I have to admit that some tables were redundant but it was made by short time for delivering by the contractor. I suggested the contractor to work in a second edition of this project but he said that money was more important than quality. I had it on my google drive account but now you can take a look.
anything you want to share with me, write to [edgarrod71 at gmail dot com]