Log in with SSH to login.domeneshop.no with your username and password. Then use the mysql command like this:
mysql DATABASE -uUSERNAME -hDATABASE.mysql.domeneshop.no -p
You received the name of the database, your username and password upon activation of MySQL for your webhotel.
For help, enter help. To exit the program, type quit or q. You can also interrupt mysql with control+C.
Official documentation for MySQL: