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Subject: RE: [ubl-dev] UUID


This is a very useful link for UUIDs (even has a generator)

http://www.itu.int/ITU-T/asn1/uuid.html



Quoting "David RR Webber (XML)" <david@drrw.info>:

> Chin,
>
> I don't think this is the best list to post these type of Q's vis
> message handling.
>
> All the Qs you ask about delivery, redelivery dsigs, etc are already
> taken care of in the ebXML messaging specification and you just need to
> do delivery via a conformant ebMS to take care of all that.
>
> Vis the UUID algorithm - this was originally developed by Microsoft I
> beleive for use in Windows registry - and subsequently published.  You
> can get open source that implements it.  The UUID mechanism is also
> used in ebXML Registry - so that contains existing functions that
> compute those for you.
>
> DW
>
>
>  -------- Original Message --------
> Subject: Re: [ubl-dev] UUID
> From: Chin Chee-Kai <cheekai@SoftML.Net>
> Date: Sat, September 02, 2006 1:25 am
> To: UBL-Dev <ubl-dev@lists.oasis-open.org>
>
> I suppose "universally" has to exclude e-commerce to Pluto from now
> on...
>
> Anyway, the UUID follows a specific algorithm to ensure that IDs
> generated by
> this same algorithm are all unique anywhere in the world and across
> time,
> with only extremely small and insignificant chances of collision (2 or
> more
> generated IDs are the same).
>
> So values stuffed into this field need to follow that algorithm in order
> to
> achieve
> uniqueness universally (within Earth).
>
> In the original poster's question, he's right to say different
> transmissions of
> the same business instance would use different UUID and same business
> ID.
> That's theoretically though.  There may be practical difficulties in
> trying to
> replace different values of UUID into the instance prior to
> transmission, and
> retain the overall integrity of the digitally-signed instance if digital
>
> signature
> is used.  Need to look a bit more into this aspect I think.
>
> Best Regards,
> Chin Chee-Kai
>
> At 10:50 AM 2006-09-02 +0800, Tim McGrath wrote:
>> I would say that it means parties exchanging these documents can be
>> assured they will never see a duplicate value for this identifier in any
>> other document instance.  in other words 'universally' means within their
>> universe of discourse.
>>
>> This includes other galaxies :-)
>>
>>
>> G. Ken Holman wrote:
>>
>>>
>>> Does anyone have insight on the scope of "universally" in the UBL   
>>> definition?
>>>
>>> . . . . . . . . . . . . . . . Ken
>>>
>>
>> --
>> regards
>> tim mcgrath
>> phone: +618 93352228
>> postal: po box 1289   fremantle    western australia 6160
>> web: http://www.portcomm.com.au/tmcgrath
>>
>>
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