Re: OO foundation
From: rpost <rpost_at_pcwin518.campus.tue.nl>
Date: Sat, 08 Mar 2008 14:38:59 +0100
Message-ID: <d91b2$47d296f3$839b4533$11329_at_news1.tudelft.nl>
Date: Sat, 08 Mar 2008 14:38:59 +0100
Message-ID: <d91b2$47d296f3$839b4533$11329_at_news1.tudelft.nl>
Marshall wrote:
>On Mar 5, 7:58 am, "H. S. Lahman" <h..._at_pathfindermda.com> wrote:
>>
>> ... the relational model is a subset of the OO foundation ...
>
>Please describe where JOIN and UNION for example,
>are to be found in the OO foundation. Or in any OO language.
Of course there is still a difference: JOIN and UNION are symmetric, assuming a helicopter perspective in which the data manipulator has full access to all of the data, while the OO world is inherently asymmetric (code can only work see data explicitly exposed to the class the code is in).
-- ReinierReceived on Sat Mar 08 2008 - 14:38:59 CET