[CREATE] schema required for XML format?

[Kai-Uwe Behrmann]

Hello,

a questions from a non XML expert.
(Sorry in advance if this is too offtoppic here.)

Someone else tries to implement spectral data handling with the XML based 
CxF format [1] for Oyranos. The documentation of CxF3 comes with a 
schema. The CxF schema license is incompatible with open source.


My question is,
Can a XML based format be properly implemented without the accompanying 
schema? Would it render a great disadvantage to be not able to use and 
distribute the available schema because of license issues? E.g. having the 
XML Namespace refering to a URL with non redistributeable content.



kind regards
Kai-Uwe Behrmann
-- 
developing for colour management 
www.behrmann.name + www.oyranos.org

[1] http://www.colorexchangeformat.com/documents/literature/CxF/CxF3_Schema_and_Examples.zip