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#1 (**permalink**) 04-11-2008, 03:10 AM

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.

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#2 (**permalink**) 04-11-2008, 03:10 AM

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

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#3 (**permalink**) 04-11-2008, 03:11 AM

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
>

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