Re: Tag Languages, UID's etc.

[Philip Goatly <philip.goatly@bolero.net>]

Precisely !

Phil Goatly
----- Original Message -----
From: "duane" <duane@xmlglobal.com>
To: "Martin Bryan" <mtbryan@sgml.u-net.com>
Cc: "Arnold, Curt" <Curt.Arnold@hyprotech.com>; <ebxml-core@lists.ebxml.org>
Sent: Friday, January 26, 2001 12:57 PM
Subject: Re: Tag Languages, UID's etc.


> Curt/all:
>
> Sorry - I should have jumped in sooner on this thread.  Here is a quick
> demo.
>
> Here is an XML message.  Most mail clients will not display the
> characters properly.
>
> </xml version="1.0" encoding="UTF-16"?>
> <�o"�,�>
>   <'��?fvf�fff?�[fX?>01</'��?fvf�fff?�[fX?>
>     <�Z�,�, ,�>01</�Z�,�, ,�>
>     <A�ŐV,�CAI>01</A�ŐV,�CAI>
>   <,�,āASeZ퐻.i,>12.99</,�,āASeZ퐻.i,>
> </�o"�,�>
>
> A little criptic?  Not only do you have to understand it but your
> application might too.  Unfortunately,  your application cannot even
> recognize <Element> is really the same as <element> (in enlgish) becuase
> to a machine, one letter case insensetive will make the app barf.  Those
> of us who occassionally write XML with a text editor spend a lot of time
> tracking down small mistakes like this case mismatch too (expecially me
> with my Canadian grammar and bad spelling ;-)
>
> Okay - let's try again.  This time with UIDs as fixed attributes of the
> DTD:
>
> </xml version="1.0" encoding="UTF-16"?>
> <�o"�,� UID=GXL:10021>
>   <'��?fvf�fff?�[fX? UID=GXL:10022>01</'��?fvf�fff?�[fX?>
>     <�Z�,�, ,� UID=GXL:10023>01</�Z�,�, ,�>
>     <A�ŐV,�CAI UID=GXL:10024>01</A�ŐV,�CAI>
>   <,�,āASeZ퐻.i, UID=GXL:10025>12.99</,�,āASeZ퐻.i,>
> </�o"�,�>
>
> But this time a quick Registry lookup (or local cache lookup so we don't
> have to keep using the registry) gives us the following xml fragments:
>
> ...
> <UID>UID:10021</UID>
> <Description xml:lang="EN-US">The element container hold a date and
> stock quote</Description>
> <EquivalentTo YUID="cXML:10023>YourKnownElementName</EquivalentTo>
> ...
> ...
> <UID>UID:10022</UID>
> <Description xml:lang="EN-US">The element container hold the current
> month</Description>
> <EquivalentTo YUID="cXML:10023>YourKnownElementName</EquivalentTo>
> ...
> UID:10023 is the day element, 10024 the year and 10025 the price of the
> stock expressed in Thailand Baht etc.
>
> Now both you and your application can understand the message.  The key
> here is that the elements YOU chose to use are always able to convey the
> human and sometimes machine knowledge base for the content whiel the UID
> will always be primarily a machine reference but can also be used by
> humans to grab the true semantics by browsing a registry.
>
> The mechanism is simple and effective and once you and your app
> understand the UID,  you don't have to query the registry each time it
> comes in or another trading partner requests it.
>
> <SideNote>
> I will likely not be able to respond to this thread for 48 hours.
> </SideNote>
>
> Cheers!  Great work going on here.
>
> Duane Nickull
> Technical Architecture
>