This is how I got it to work at GoDaddy,
Inside your wp-config.php file, the DB_NAME and DB_USER are the same (name of your database). The DB_HOST didn’t work with the default ‘localhost’ value for me, so I went into the Hosting Manager (at GoDaddy) and found out the actual MySQL Host Name to get it to work. Mine was mysql75.secureserver.net, but yours may be different.
