Re: The wisdom of the object mentors (Was: Searching OO Associations with RDBMS Persistence Models)
From: Dmitry A. Kazakov <mailbox_at_dmitry-kazakov.de>
Date: Thu, 1 Jun 2006 13:07:48 +0200
Message-ID: <1s0xby4sdn0fv$.1tj1gjqnhenn3$.dlg_at_40tude.net>
>> On Thu, 01 Jun 2006 01:48:55 GMT, J M Davitt wrote:
>> 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.
>
> File versioning anyone ?
Date: Thu, 1 Jun 2006 13:07:48 +0200
Message-ID: <1s0xby4sdn0fv$.1tj1gjqnhenn3$.dlg_at_40tude.net>
On Thu, 1 Jun 2006 13:56:14 +0300, x wrote:
> "Dmitry A. Kazakov" <mailbox_at_dmitry-kazakov.de> wrote in message > news:12sh1oeeq72os$.1cm06guz61xq9.dlg_at_40tude.net...
>> On Thu, 01 Jun 2006 01:48:55 GMT, J M Davitt wrote:
>
>> 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.
>
> File versioning anyone ?
My last one was RSX-11M (alas, I must say). The file version number was a part of the path there: DK1:[1,54]FILE.FTN;25, if I correctly remember...
-- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.deReceived on Thu Jun 01 2006 - 13:07:48 CEST