Juan Pablo Espino <jp.espino@gmail.com> writes:
> My question is if the architecture of postgreSQL were inherited of
> postgres original project or postgreSQL were developed completely with
> a new concept. Thanks in advance.
There hasn't been any fundamental rearchitecting since Berkeley days.
For instance, look at Postgres 4.2 --- those sources are available on
the net, and if you compare them to current CVS you'll find plenty
that's recognizably the same code.
regards, tom lane