Database naming conventions are not documented

[davidvandusen]

Expected behaviour

The README file of the db module explain the naming conventions used for tables, columns, etc., and other conventions.

Actual behaviour

Developers need to intuit the naming conventions from existing schema.

Details and resources

The conventions are based on Ruby on Rails. If they have a web page that explains their conventions, it can be linked to in the README.

It looks like some nice folks have made cheat sheets. For example: https://gist.github.com/iangreenleaf/b206d09c587e8fc6399e

And there is a section in the official docs: https://edgeguides.rubyonrails.org/active_record_basics.html#naming-conventions

Checklist

• This issue is linked to the appropriate project.
• This issue has appropriate labels.