IVOA Data Models and Provenance

[Enrique Galceran García]

Dear member of IVOA,
(I am not sure this will go to the person responsible for the XML files, please forward appropriately)
My name is Enrique Galceran and I am currently studying the different Data Models that the IVOA committee has designed, specifically the Provenance and the general IVOA Data Model. At the moment I have found the available XLM, XSD and Schematron files regarding these Data Models that are available on the webpage (http://www.ivoa.net/xml/).
However, when I used a validation program like <oXygen/> it outputs several errors ("cvc-complex-type.3.2.2: Attribute 'name' is not allowed to appear in element 'sch:pattern'" while validating any model with the Schematron file and "cvc-complex-type.2.4.a: Invalid content was found starting with element 'title'. One of '{identifier, uri}' is expected." while validating the IVOA-DM using the XSD file). Is it possible that some of said files aren't updated correctly, or am I missing something?
On a similar note, does the IVOA have a XSD file with the defined Provenance Data Model? Would it be possible to obtain a copy of said file? A separate UML/XSI file would also be appreciated. (I wanted to generate something similar to the full class diagram on page 34 of the documentation http://www.ivoa.net/documents/ProvenanceDM/20190719/ProvenanceDM-1.0-20190719.pdf).

With gratitude,
Enrique Galceran

P Please consider the environment before printing this e-mail.
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