I’ve just updated the running blog post that give the version numbers to identify the specific release of Project Server 2010 and SharePoint Server 2010 you have loaded – http://blogs.msdn.com/b/brismith/archive/2010/09/23/how-to-tell-which-cumulative-update-hotfix-or-service-pack-version-of-project-server-2010-and-project-2010-you-are-running.aspx
This now includes the February 2011 Cumulative Update for Project Server – including the link to the published KB on the roll-up – which can be found at http://support.microsoft.com/kb/2475879.
One quick reminder – there are other packages which can be loaded for just SharePoint Server or Project Server – which may mean that the versions of the databases could be different to the ones I have listed. My versions assume the roll-up is loaded. Also note that in most cases the Project Server databases will not match the SharePoint ones – and in fact if they do then at the time of writing that would mean you have the June 2010 Cumulative Update – the only time that they have matched!
Final point – we do not always update the database schema and therefore the DB version can stay the same as the previous CU.