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From: "Alfredo Novoa" <alfredo_novoa@hotmail.com>
Newsgroups: comp.object,comp.databases.theory
Subject: Re: Storing data and code in a Db with LISP-like interface
Date: 5 May 2006 06:07:30 -0700
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Dmitry wrote:

>That mumbo-jumbo expresses algebraic properties. Integer is a subtype of
>Rational in the same sense as a ring exists in a field. The point is that
>subtyping relation has nothing to do with subsets of values. It deals with
>properties. In OO it is called "behavior".

No! It is OO what has nothing to do with subtyping.


Regards
  Alfredo