Thread: Another history question

I know that postgres was a project directed by Michael Stonebraker in
Berkeley (1986-1994) and that soon Jolly Chen and Andrew Yu did
postgres95.

I understand that the main change in postgres95 was to implement SQL
instead of POSTQUEL.  Then after the appearance of postgres95
postgreSQL 6.0 arises.  And what came later it is well-known history.

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.

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

Thanks for the explanation. Then, Can I say that PostgreSQL and
Informix are cousins?


On Tue, 22 Mar 2005 17:36:28 -0500, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> 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
>