Newsgroups: comp.lang.smalltalk,comp.databases.object
Path: cantaloupe.srv.cs.cmu.edu!das-news2.harvard.edu!news2.near.net!howland.reston.ans.net!news.sprintlink.net!noc.netcom.net!netcom.com!marcs
From: marcs@netcom.com (Marc San Soucie)
Subject: Re: Behavior or structure used by rules and queries?
Message-ID: <marcsD7rp2F.LzE@netcom.com>
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
References: <9503051621.AA03407@amil.co.il> <Z069RA7.kotwell@delphi.com> <3nf4rl$ceu@lantana.singnet.com.sg> <3nqcud$i37@agate.berkeley.edu> <3nr5j3$39h@ornews.intel.com>
Date: Fri, 28 Apr 1995 22:56:39 GMT
Lines: 20
Sender: marcs@netcom21.netcom.com
Xref: glinda.oz.cs.cmu.edu comp.lang.smalltalk:23104 comp.databases.object:5655

pdlogan@ornews.intel.com (Patrick Logan) writes:

> I have been thinking a bit about the relationship of rules and queries
> to objects lately.

> My main concern is that queries in OODBs and rules in expert systems
> integrated with OOPLs are typically depending on the *structure* of
> objects rather than the *behavior* of objects.

> Is that perception correct?

Not entirely. Queries in GemStone can be structural, behavioral, 
associative (using indexes), or a combination of the three. It is a choice
of the query formulator.

    Marc San Soucie
    Servio Corporation
    Beaverton, Oregon
    marcs@slc.com

