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Subject: UUID and GUID
Hello UBL TC,
At the Manhattan UBL TC meeting, I took the AI to check on UUID
vs. GUID and figure out which of these was proprietary.
The answer to that question is: GUID is a proprietary Microsoft
implementation of UUID. We can't be referencing proprietary
specifications here, so we have to use UUID. (The OASIS ebXML
Registry Standard has always used UUID, by the way.)
Consequently, we will have to change all occurrences of GUID in
the schemas to UUID. I'll enter this in the issues list once we
settle on a UUID reference.
The reference question is not as simple as one would hope. For
background, see the Wikipedia entry on UUID. Here's my take after
reading that article and doing a little bit of checking around:
- The original 1997 UUID spec from The Open Group is not what we
want, despite the fact that this is the spec referenced in ebRR
3.0 as
[UUID] DCE 128 bit Universal Unique Identifier
http://www.opengroup.org/onlinepubs/009629399/apdxa.htm#tagcjh_20
- Possible UUID specs include:
- ISO/IEC 11578:1996, which is not freely available online
- IETF RFC 4122, which is available at
http://www.ietf.org/rfc/rfc4122.txt
http://www.rfc-archive.org/getrfc.php?rfc=4122
ftp://ftp.rfc-editor.org/in-notes/rfc4122.txt
- ITU-T Rec. X.667 (2004) | ISO/IEC 9834-8:2005, which is
based on RFC 4122 and can be found in "prepublished" form at
http://asn1.elibel.tm.fr/en/tools/oid/standards.htm
http://www.itu.int/ITU-T/studygroups/com17/X.667.pdf
Ordinarily I would go with the RFC simply because it's freely
available. However, the ITU-T/ISO/IEC spec is also freely
available as an exception to the usual rule, and I'm informed that
an agreement between ITU and ISO will keep it that way. So my
recommendation is to reference that one unless someone sees a
reason not to.
Please post any thoughts you might have on this, and let's aim to
resolve the issue in next week's Atlantic TC call.
Jon
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