Change the Database in an Existing Rails App

An addition in Rails 6.0 CLI command1 that makes it easier to change the database adapter.

bin/rails db:system:change --to=postgresql
bin/rails db:system:change --to=mysql
bin/rails db:system:change --to=sqlite3
bin/rails db:system:change --to=oracle
bin/rails db:system:change --to=frontbase
bin/rails db:system:change --to=sqlserver
bin/rails db:system:change --to=jdbc