[sc34wg3] Association items

[Lars Marius Garshol]

* Lars Marius Garshol
| 
| What we agreed in Amsterdam (this year) was to leave XTM alone, but to
| require an association type in TMDM. However, TMDM will define a PSI
| for untyped associations that is inserted when no explicit type is
| given. Thus we avoid the ugliness of association.[type] sometimes
| being null, yet we keep backwards compatibility.

* Nikita Ogievetsky
| 
| This sounds great! But wasn't it already here:
| http://www.topicmaps.org/xtm/1.0/core.xtm#association  ?

Admittedly, it was. I guess you can say that we've reintroduced it. :)
  
| Also, unless things have changed, scope is only syntactically
| optional: if omitted it was assumed to be the "unconstrained" scope.

Correct. However, the unconstrained scope is represented as the empty
set, so there is no ugliness in the model on that point.

-- 
Lars Marius Garshol, Ontopian         <URL: http://www.ontopia.net >
GSM: +47 98 21 55 50                  <URL: http://www.garshol.priv.no >