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Subject: RE: [regrep] Issue with UUID's for Core Components and BIE's

I would like to caution everyone against working around a registry's built
in identification mechanisms.  By storing primary identifiers as Slots, we
degrade the authority of the registry.  Registries use the UUIDs as their
primary identifier to objects, and in practice they are optimized more
completely for operations involving intrinsic metadata.  I've been involved
in a complex technology integration involving ebXML registry, and a choice I
am regretting is using Slots for things that could technically be addressed
by attributes of RegistryObject or RegistryEntry.


-----Original Message-----
From: David RR Webber [mailto:david@drrw.info] 
Sent: Friday, April 09, 2004 4:40 PM
To: carlmattocks@checkmi.com
Cc: carlmattocks@checkmi.com; Chiusano Joseph; Duane Nickull;
regrep@lists.oasis-open.org; regrepsemantic@lists.oasis-open.org
Subject: Re: [regrep] Issue with UUID's for Core Components and BIE's



And these authorities usually already have their own coding scheme
worked out already - so you really want to make sure you have
that "External ID" slot and mechanism to just put that straight in.

No need for us to create extra work for people  -just leverage
what they have done already and automate the use of it.

Behold the power of UID.

Cheers, DW.

----- Original Message ----- 
From: "Carl Mattocks" <carlmattocks@checkmi.com>
To: "David RR Webber" <david@drrw.info>
Cc: <carlmattocks@checkmi.com>; "Chiusano Joseph" <chiusano_joseph@bah.com>;
"Duane Nickull" <dnickull@adobe.com>; <regrep@lists.oasis-open.org>;
Sent: Friday, April 09, 2004 3:31 PM
Subject: Re: [regrep] Issue with UUID's for Core Components and BIE's

> Yes, Yes - similar to the way the Getty Art Foundation acts as the
> authority for the semantic relations embedded in Art & Architecture
> Thesuarus and  ACORD is the authority for Schemas used in Insurance
> transactions (and eventually the ontology) ...
> I expect the content of many Registry / Repository services will be
> organized using 'associations' defined elsewhere and therefore require
> synchronization on a regular basis. .
> <quote who="David RR Webber">
> > Carl,
> >
> > You raise an interesting another point.  In BCM we talk about
> > domains, communities of interest and then authoritive sources.
> >
> > Such an authority clearly has to be responsible for managing the
> > UID values within their domain.
> >
> > Using my example - the USPS is managing the semantics
> > around their address formats.  Then this can be crosswalked
> > to the international authority - the UPU - and their UID set,
> > and similarly the OASIS CIQ too.
> >
> > However - you expect that domain analysts can work
> > offline - and then later upload or share their work with
> > both RR servers and co-workers.   This is another
> > critical value - that avoids the need for an RR in order
> > to be able to do CCTS.  If you use UUID - you are almost
> > mandating that people have to do this with RR - and that
> > clearly breaks the ebXML need for components to be
> > self-sufficient.
> >
> > The good news is - by decoupling away from UUID values
> > and using UID as the reference - any registry can happily
> > import those definitions and assign it own local UUID internal
> > keys to those entries - without breaking anything.
> >
> > Also - by using the UID - you can track groups of related
> > definitions ( query on "USPS0201*" ) and so on - and
> > versions and sub-versions (query on "USPS020120:*") -
> > which is not possible in a UUID based system.
> >
> > Notice also that if you want to use something like UDEF id
> > in addition - or in place of the 6 digit UID - this also
> > works - for the same reasons - the authoritative source
> > creates the UDEF ids and these then become the domain
> > reference system.
> >
> > All these behaviours and more is why the reference system
> > for the semantic building blocks should be using the UID
> > tied to the registry%

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