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<p class="MsoNormal" style="text-align:justify"><span lang="EN-US">Dear member of IVOA,<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><i><span lang="EN-US">(I am not sure this will go to the person responsible for the XML files, please forward appropriately)<o:p></o:p></span></i></p>
<p class="MsoNormal" style="text-align:justify"><span lang="EN-US">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 (<span class="MsoHyperlink"><a href="http://www.ivoa.net/xml/">http://www.ivoa.net/xml/</a></span>).<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span lang="EN-US">However, when I used a validation program like <oXygen/> it outputs several errors (“<i>cvc-complex-type.3.2.2: Attribute 'name' is not allowed to appear in element 'sch:pattern'”</i> while
validating any model with the Schematron file and “<i>cvc-complex-type.2.4.a: Invalid content was found starting with element 'title'. One of '{identifier, uri}' is expected.”</i> 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?<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span lang="EN-US">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
<span class="MsoHyperlink"><a href="http://www.ivoa.net/documents/ProvenanceDM/20190719/ProvenanceDM-1.0-20190719.pdf">http://www.ivoa.net/documents/ProvenanceDM/20190719/ProvenanceDM-1.0-20190719.pdf</a></span>).<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align:justify">With gratitude,<o:p></o:p></p>
<p class="MsoNormal" style="text-align:justify">Enrique Galceran<o:p></o:p></p>
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