MySQL
To connect to the MySQL server, use localhost as the hostname and port 3306. All connections must be authenticated using a valid MySQL user (see Managing users), and the particular user must have access privileges assigned to access the database.
PostgreSQL
To connect to the PostgreSQL server, use localhost as the hostname and port 5432. Do not use a local UNIX socket. All connections must be authenticated using your main account user and password.
Remote connections
Seattle Server doesn't allow direct remote connections to either MySQL or PostgreSQL.
