phpMyAdmin access to remote database

I am doing some major work for someone else's site and need to have full admin access to the relevant database on his server. (To add lots of tables and fields to existing tables). While I am developing the new system, the existing site needs to do what it does now without interruption. He has set up appropriate access at his end allowing me through the fixed IP of my own server (which has Plesk 12 on it) so that I can do what I need. His access appears to be fine - I can access the...

phpMyAdmin access to remote database