Re: Mixing OO and DB

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Wed, 20 Feb 2008 22:10:38 -0400
Message-ID: <47bcdda4$0$4035$9a566e8b_at_news.aliant.net>


Yagotta B. Kidding wrote:

> Robert Martin wrote:
>

>>[whatever]

>
> ..
>
>
> "Dmitry A. Kazakov" <mailbox_at_dmitry-kazakov.de> wrote in
> news:10zkvw1lm5u6k$.15jxnouhrj6h7.dlg_at_40tude.net:
>
>>Contract /= meaning. Contract is a set of well-defined predicates to
>>be true. It cannot capture "meaning".

>
>
> S Perryman <q_at_q.com> wrote in news:fphg87$m3c$1_at_aioe.org:
>
>>No.
>>Liskov and Wing define their subtype predicate in a specific way,
>>using a substitutability predicate. The latter predicate they also
>>define very precisely.

>
>
> Invasion of the OOP clones, not less. Are these dudes, like, for real,
> still fighting over the Circle/Ellipse 'problem', Liskov's 'principle' ?
> Wow !
>
> It's been like what ? 20 years since the Ellipse/Circle problem
> discovery ? The progress in this OOP business is slow indeed ! Good
> luck anyway...

To be fair, it has only been 15 years. It has been more than 10 years since someone told me the tsunami of OODBMS was going to wash me off the face of the earth. Received on Thu Feb 21 2008 - 03:10:38 CET

Original text of this message