Document database best practices

[lorenyu]

Context

https://nava.slack.com/archives/C03G1SWD9H7/p1663856080445169

Notes

• also include things like constraint naming conventions (https://stackoverflow.com/questions/4107915/postgresql-default-constraint-names/4108266#4108266)

[yoomlam]

May also want to consider Rails naming conventions:

• https://gist.github.com/iangreenleaf/b206d09c587e8fc6399e
• https://medium.com/@carly_l/ruby-on-rails-naming-convention-cheatsheet-6fa64bf9be19