There are several nice graphs (in the computer science sense: nodes and arcs) of the history of programming languages, such as http://rigaux.org/language-study/diagram.html
I haven't found one of operating systems in general, but there was one for UNIX around somewhere, and this one for Linux distributions was easy to find: https://www.cyberciti.biz/tips/linux-kernel-history-and-distribution-time-line.html
Database systems have a rich and tangled history, for most of which as far as I can tell documentation exists, but is not as easy to find as for more familiar matters such as home computing.
Does there exist a graph or other form of comprehensive overview of the history of database and ERP systems?