Why is object-relational?

On Sat, Apr 13, 2002 at 01:21:59PM -0700, Camila Rocha wrote:

Hi!

I know that postgres is a object-relational db... but i don't see
objects... why is it a object-relational db?

http://www.ca.postgresql.org/users-lounge/docs/7.2/postgres/tutorial-inheritance.html