[ubl-ndrsc] Position Paper: Modeling Roles in UBL

Please find attached a position paper 
"Modeling Roles in UBL".

 

This paper grew out of my analysis of the 
tag name to type name correspondence discussion we had on the last day of our 
recent F2F.  In the paper I attempt to put that issue to rest by exhaustive 
(exhausting ;-) enumeration and examination of the possibilities.

 

The position developed is that none 
of the 12 candidate rules are viable.

 

In the paper, starting at section 7.1 I 
present what I believe is a viable alternative to "anarchy" -- explicit modeling 
of properties and roles. I observe that properties are alluded to but never 
explicitly defined in the Core Components work, and that that is an 
important source of UBL TC's confusion.  

 

The paper makes explicit the concept of 
property and role and places them in relation to the 
other elements of the CC meta-model.  That (expanded/explicit) meta-model 
is related to XML schema according to the UBL NDR SC rules on page 
8.

 

Upshot: even if you don't buy the value of 
the whole "role" concept, I believe that the analysis of tag name to type name 
correspondence is valuable to carry forward, as is the explicit modeling of 
properties in the CC meta-model (and mapping of that model to XSD according to 
the NDR SC rules).

draft-burcham-rolemodel-02.doc