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[ubl-ndrsc] RE: Core Components

From: System
To: [email protected]
Date: Fri, 11 Oct 2002 15:04:00 -0000

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Subject: [ubl-ndrsc] RE: Core Components




From: "CRAWFORD, Mark" <[email protected]>
To: "UBL Design Rules (E-mail)" <[email protected]>
Date: Fri, 11 Oct 2002 15:02:11 -0400









Garret has asked me the 
following question -
 
> We have been struggling 
with CCTs and Data Types over the past couple of weeks and have come across 
several situations where CCTs do not appear to > provide 
enough flexibility.  For example, we were trying to define some of the XML 
Schema data types as CCTS data types and got stuck at anyURI.  This > XML Schema 
data type does not fit very well into the list of approved CCTs.  We also 
came across a few instances where a proposed data type would be > better 
represented as a simple string rather than a Text CCT with an associated 
Language. Identifier. Are there any recommendations about how to represent > XML Schema 
data types in CCTS syntax? 

My initial reaction 
 is that we would not expect a one to one 
relationship as CCT data types are not syntax dependant.  However this 
answer leaves me cold.  My next reaction was to reply that since anyURI is 
a type of string, then simply use Text. Type.  However this looses the 
ability to do data type validation against the xxxx://.  My next reaction 
was that the syntax binding of CCT data types would be accomplished by the 
constraints language, but I am not sure that the Attribute Construct is 
adequate.  So I turned to the UBL NDR document with no satisfaction and 
finally to the Definition of Elements, Attributes, and Types - still no 
resolution.  So it seems, unless I am missing something, that we have not 
determined if or how we are going to directly associate XSD built-in or 
user-defined data types with CCT data types.  Any 
comments?
 
Mark





Follow-Ups:

Re: [ubl-ndrsc] RE: Core Components
From: "Eve L. Maler" <[email protected]>








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