I am attempting to set up a test instance of Confluence 6.4 for a user in my network, and we plan to use Postgres for the database if we decide to move to production. I would like to configure the evaluation install to use postgres to ensure I understand how they talk and get a handle on configuration beforehand. I saw some answers where it seems like this was possible in Confluence 5.x but I do not see any documentation on if and how this is done with the evaluation version. Is this possible at all, or will I have to wait until we buy a production version to work on hooking in postgres to Confluence?