RUBY

How To Set Up Ruby on Rails with Postgres

https://medium.com/@frouster/ruby-on-rails-postgresql-f1b037924bdf
https://www.digitalocean.com/community/tutorials/how-to-set-up-ruby-on-rails-with-postgres
https://www.ionos.com/digitalguide/server/know-how/use-postgresql-with-ruby-on-rails-on-ubuntu/

#Install Rails
gem install rails

#Install Postgress
gem install pg

#Setting Up Postgres
su - postgres
psql
create role myapp with createdb login password 'password1';

#Creating Your Rails App
rails new myapp --database=postgresql

#More
rails db:create db:migrate