Re: Mixing OO and DB
Date: Thu, 6 Mar 2008 14:23:01 -0800 (PST)
Gene Wirchenko wrote:
> Marshall <marshall.spight_at_gmail.com> wrote:
> >On Mar 6, 12:06 am, Robert Martin <uncle..._at_objectmentor.com> wrote:
> >> On 2008-03-05 08:33:36 -0600, "David Cressey" <cresse..._at_verizon.net> said:
> >> > All this leads me to claim that data is more fundamental than behavior. Not
> >> > more valid. Just more fundamental. You can have systems that have data but
> >> > no behavior.
> >> If they have no behavior how can they be systems?
> >If your car has no microwave how can it be a vehicle?
> >A bunch of 3x5 cards in little drawers at the library is both a system
> >and a database.
> No, it is not a system. The bunch of 3x5 cards with a person
> using them is. In this case, the user encapsulates the behaviour. The
> behaviour is important. The cards by themselves are useless as you
> would find out very fast if you handed them to a typical 2-year-old to
> extract data from. (chew, chew, rip, rip, scribble on).
That's no 2-year-old, that's MS-Access
> Gene Wirchenko
-T- Received on Thu Mar 06 2008 - 23:23:01 CET