For those of you who are extremely serious about your genealogical data, and who are RootsMagic 10 users, you are hopefully aware of the SQLite Tools for RootsMagic website (https://sqlitetoolsforrootsmagic.com). RootsMagic’s database is a relational database built on SQLite and can be read by third-party SQLite management and development tools. Some users of this website use SQL tools to generate reports that can be difficult to generate from within RootsMagic itself.
The group behind it has moved up to RootsMagic 10 (but still support older versions)
The centerpiece of the project is the RM10 Data Dictionary:
It is a spreadsheet that tracts the RootsMagic 10 data definitions, but also tracks database details of the RootsMagic line all the way back to RootsMagic Version 4.
There is also a discussion forum available, and it is active: