This question has probably been asked before (I did a quick search on the forum, but I'm not sure I used the correct words). I have three domain names, all hosted on the same server. On my server, I have a working WP install, linked to domain1.com. sub.domain1.com is currently running on dotclear, which I plan to get rid off. domain2.com is not doing anything for the moment.
For organisation purposes, I'd like to have ONE wordpress database, and call different categories on my different domain names. Is that even possible ? domain1.com has a need for a full WP install, whereas sub.domain1.com and domain2.com only need the output of 1 category each. I think it would be a real waste of space and database to have three wordpress installs on the same server, as the websites all share some content.
So, is it possible or should I install a fresh WP ? If it's not possible between domain1.com and domain2.com, is it possible between domain1.com and sub.domain1.com ?
Thanks for all input and advice ! :)