Error establishing a database connection

How do I replace the information in the wp-config.php file? Is it not ok to replace ‘DB_NAME’ with ‘mysql07.cliche.dk’ for eksample?

<?php
// ** MySQL settings ** //
define(‘DB_NAME’, ‘wordpress’); // The name of the database
define(‘DB_USER’, ‘username’); // Your MySQL username
define(‘DB_PASSWORD’, ‘password’); // …and password
define(‘DB_HOST’, ‘localhost’); // 99% chance you won’t need to change this value