Re: X.500 as document repository
yeongw@spartacus.psi.com Tue, 25 February 1992 15:05 UTC
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To: Sylvain Langlois <sylvain@cli53an.edf.fr>
Subject: Re: X.500 as document repository
Cc: lazear@gateway.mitre.org, osi-ds@cs.ucl.ac.uk, mcguthry@gateway.mitre.org
Reply-To: yeongw@psi.com
In-Reply-To: Your message of Mon, 24 Feb 92 17:49:00 +0000. <8195.698953740@cli53an>
Date: Tue, 25 Feb 1992 08:27:07 -0500
From: yeongw@spartacus.psi.com
> Using the X.500 technology to store "pointers" to > documents is fine, using it as a "file transfer tool" is totally > inadequate. > The technology should provide "hints" to another application suited to > this kind of job (e.g. FTP or FTAM or Z39.50). You cannot retrieve the > file system of a host you lookup through the DNS! I mostly agree with this. In fact, I would go even further and say that, except in limited cases, X.500 isn't even so great at storing pointers to individual documents. The problem is that X.500 has this hierarchical view of the world, which doesn't necessarily map well into the world of documents (in general repositories of information). It also isn't so hot as far as searching capabilities go ... In my view, the problem of retrieving information can be divided into three stages: 1. identifying candidate repositories for the information (documents) 2. searching repositories to identify individual items of information (documents) that would be of interest 3. delivering the information (documents) to the end user. I believe X.500 is the perfect technology for 1., and has some limited use for 2. It is completely inadequate for 3. The justification for my position is somewhat long, so I won't go over it here, and create yet another overly long message :-). If you care to find out how I justify my position, please ftp the document wp/ps/nir.ps from ftp.psi.com. It's a technical report I wrote on this subject. Wengyik
- X.500 as document repository lazear
- Re: X.500 as document repository Sylvain Langlois
- Re: X.500 as document repository yeongw
- Re: X.500 as document repository Sylvain Langlois
- Re: X.500 as document repository Thomas Johannsen
- Re: X.500 as document repository Steve Hardcastle-Kille