Re: The wisdom of the object mentors (Was: Searching OO Associations with RDBMS Persistence Models)

From: x <>
Date: Thu, 1 Jun 2006 13:28:11 +0300
Message-ID: <e5mfah$30n$>

"Erwin" <> wrote in message
> > It is strange to hear talks about identity from RM side. I thought RM
> > overcame that disease. There is no identity. Files are same, neither is
> > real. Paths aren't same. Identity is a relation, isn't it? Now if you'd
> > consider objects like (path,file), these could have identity defined as
> > id((path,file))=path.

> In the sense that "identity" refers to "the quality of being
> identical", there is of course nothing strange in the RM crowd using
> that term.

> Note that "being identical" requires two things, for else equality
> between them cannot be measured/observed/tested.

What things ? How is this "identity" distinct from "equality" ? If it isn't, then why another word ? Received on Thu Jun 01 2006 - 12:28:11 CEST

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