Well, let me add that Patrick O'Brien gave a very nice presentation on a new package called Schevo (see url below). Schevo provides a layer above an object database that imposes your schema and provides an automatic gui. I think Schevo might be an important step in spreading the joy of object databases to a wider audience. On Mar 25, 2005, at 7:01 AM, Patrick K. O'Brien wrote: > -- > Patrick K. O'Brien > Orbtech http://www.orbtech.com > Schevo http://www.schevo.org > Pypersyst http://www.pypersyst.org >