That is a very nice tool! I might use it. In case it's useful to anyone in here, I wrote a little app at erdraw.com which is specifically designed to be a way

That is a very nice tool! I might use it. In case it's useful to anyone in here, I wrote a little app at erdraw.com which is specifically designed to be a way to draw a data model in the notation of "Mastering Data Modeling" by Professor John Carlis. It serves somewhat different goals than these other tools. It prioritizes user understandability to be useful in conversations non-engineers. So it excludes technical details like data types and SQL. https://erdraw.com https://erdraw.com