Poul, I took a quick look at the demo site, but didn't see anything where the user was defining the fields. It looks like they can choose from a list of predetermined metadata fields. Looking at the code, but not actually seeing the total db schema, it looks like they might be using the EAV pattern? > On Apr 11, 2017, at 1:06 PM, Poul Kristensen <bcc5226@xxxxxxxxx> wrote: > > concept could be usefull -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general