In your downloaded WP you can see these lines in wp-config-sample:
modify these values (or ask your admin to modify for you)
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