I was wondering if there is a way to access a database service on a remote computer without having a webserver installed on that computer?
Does MYSQL DBMS provide some interface (port) which can be connected directly to, or is a webserver (that forwards the communication) mandatory?
MySQL can be access by default on port 3306.
Normally this port will be blocked by the firewall though, as it’s not good practice to have your DB server accessible to the outside world.
If you want to access a remote database via the command line you can use the mysql client.
If you’re doing this over the internet you should probably use a tunnel or VPN for security.