mysql: adapter: mysql2 username: github password: github host: 127.0.0.1 port: 3306 encoding: utf8mb4 charset: utf8mb4 collation: utf8mb4_bin database: composite_primary_keys_unittest postgresql: adapter: postgresql database: composite_primary_keys_unittest username: postgres password: postgres host: localhost sqlite: adapter: sqlite3 database: <%= File.join(project_root, 'db', 'composite_primary_keys_unittest.sqlite') %>