[sc34wg3] 7. Core subject identifiers

Patrick Durusau sc34wg3@isotopicmaps.org
Thu, 14 Jul 2005 13:21:23 -0400


The second paragraph of 7.1 reads:

" All core subject identifiers defined by this document are distinct, 
that is, topics representing these subjects cannot be merged with one 

I assume that was in response to the US comment asking what " All core 
subject identifiers defined by this document are distinct." in the prior 
draft meant. ;-)

But is not correct is it?

In other words, if I had two topic items representing the subject of 
type-instance (that is both have in their [subject identifiers] property 
the string |"http://psi.topicmaps.com/iso13250/type-instance"|), then 
they should merge. Yes?

I am thinking of the case where two topic maps are merged together and 
each is likely to have had topic items for the core subject identifiers.

As it stands it strikes me as incorrect, but I don't know if you would 
lose anything by deleting it since I am still uncertain about what was 

Hope you are having a great day!


Patrick Durusau
Chair, V1 - Text Processing: Office and Publishing Systems Interface
Co-Editor, ISO 13250, Topic Maps -- Reference Model
Member, Text Encoding Initiative Board of Directors, 2003-2005

Topic Maps: Human, not artificial, intelligence at work!