Forums on sub domains - single databse

[Blocker]

Hi.

I have 4 sub domains but only one sql database permitted by my webhost. I require 4 forums (one in each sub domain), is it possible to do this and how?

Does each forum require it's own separate database?

Is there a clever way to maybe have one database but each forum appears separate at different url's?

Hope I can get the right answers.

Thanks.