[xwiki-users] XWiki Enterprise or Manager

Hi, all, I installed XWiki manager on one machine, and installed Enterprise on another machine, I cannot tell which is manager and which is enterprise sometimes. Anyway to check that? Also the user's guide says the manager does not support postgresql, I checked the hibernate config file, switched from mysql to postgres, now both versions of my xwiki are using postgres on different machine, they both work fine, but I am not sure whether something may go wrong someday with the manager because I switched the postgresql for it, so what are the concerns of using postgres with xwiki manager? how do I overcome? Thanks Dave