Comments on VO-DML specification documents

This page aims to keep track of comments made about the VO-DML spec on this page in the WG discussion phase. Link to first entry in email list that starts the discussion. It also lists some open issues for which a particular choice was made, but where other choices could be preferrable.

Comments from DM mailing list and private communications

• Arnold Rots, 2014-04-24:
  • Rename ReferencableElement to RefenceableElement.
• Mark Cresitello-Dittmar, 2014-04-25
  Comments about the basic 'ivoa' model that is supposed to be used (imported) by all IVOA models
  • Add TimeValue to ivoa model.
  • Add ivoa:URL as sub-type of ivoa:anyURI.
• Pierre Fernique, 2014-05-05
  Comments on tiger team effort and wonders about contents of the 'ivoa' data model.
• Francois Bonnarel, 2014-05-07
  Comments about references to uytpes mappng document.
• private communication from Kristin Riebe: why is there no counterpart to UMLs aggregation relation?
• ...

Open issues identified by editors/authors

• Should VO-DMLs Model extend Package?
  Omar notes that this, together with XML schema usage of <sequence>, complicates hand-writing of models.
  ALso, it gives Model a vodml-id element, which can cause problems with the interpretation of that concept and its uniqueness requirements in a model. [Omar: It's more like the other way around. Needing vodml-id for Model is the issue. Also, the fact that the xmls now have imports as their latest element is an annoying consequence, and not only for those "hand-writing" models. I made a couple of suggestions on how to fix this, but I believe that in the end the best approach is to go back to the previous state]