ruby on rails database configuration exemples

database.yml.mysql

default: &default
  adapter: mysql2
  encoding: utf8
  pool: 5
  username: 
  password: 
  socket: /var/run/mysqld/mysqld.sock

development:
  <<: *default
  database: 

production:
  <<: *default
  database: 

database.yml.postgresql

development:
  adapter: postgresql
  encoding: unicode
  database: 
  pool: 5
  username: postgres
  password: postgres
  min_messages: warning

test:
  adapter: postgresql
  encoding: unicode
  database: 
  pool: 5
  username: postgres
  password: postgres
  min_messages: warning

production:
  adapter: postgresql
  encoding: unicode
  database: 
  pool: 5
  username: postgres
  password: postgres
  min_messages: warning

database.yml.sqlite3

development:
  adapter: sqlite3
  database: db/development.sqlite3
  timeout: 5000
  
test:
  adapter: sqite3
  database: db/test.sqlite3
  timeout: 5000

production:
  adapter: sqlite3
  database: db/production.sqlite3
  timeout: 5000