Tangram is an object-relational mapper.  It makes objects persist in relational
databases, and provides powerful facilities for retrieving and filtering them.
Tangram fully supports object-oriented programming, including polymorphism,
multiple inheritance and collections.  It does so in an orthogonal fashion,
that is, it doesn't require your classes to implement support functions nor
inherit from a utility class.

WWW: http://search.cpan.org/dist/Tangram/
Author: Jean-Louis Leroy <jll@soundobjectlogic.com>
        Sam Vilain <sam@vilain.net>
        Andres Kievsky <ank@cpan.org>