Re: Optimizing Queries in OODBs (was: Dreaming About Redesigning SQL)

From: Alfredo Novoa <alfredo_at_ncs.es>
Date: 11 Oct 2003 07:42:38 -0700
Message-ID: <e4330f45.0310110642.334c5c8a@posting.google.com>

pobrien_at_orbtech.com (Patrick K. O'Brien) wrote in message news:<m2he2hdjnw.fsf_at_orbtech.com>...

> I don't completely understand all of what you have said, or exactly
> what you are asking, but I'll try to provide some information that may
> answer your question. First, PyPerSyst is not Relational, nor is it
> Object Relational, nor does it support OQL.

Nor it is a DBMS.

> It is a persistence
> system for Python objects. It can persist any Python object graph,

It is only a Phyton library which can save snapshots of main memory network structures.

It another "DBMS" without DBMS like the infamous Prevayler.

http://www.dbdebunk.com/page/page/743719.htm

> As for optimization, that isn't quite as much of an issue, as
> PyPerSyst is an in-memory database, which means that all objects
> reside in RAM.

What nonsense! Optimization is independent to where data reside. There are main memory SQL DBMSes with optimizers.

Regards
Alfredo Received on Sat Oct 11 2003 - 09:42:38 CDT