Oxygen XML Forum

Hi,
If my DITA-OT has document types defined in dtd, schema, and rng formats, which version will validation and transform use to determine if DITA files are valid according to the associated document type?
Thanks in advance,
Ann

Hi Ann,

This depends on how the DITA topics refer to the associated schema.
If they have a DOCTYPE declaration, they are validated/published with the DITA DTDs.
If they look something like:
then they are validated with the RNGs.
You can have topics with different schema type references in the same DITA project.
When you create a DITA topic by default Oxygen shows new file templates to create the topic with any of the DTD/XML Schema/RNG types but some people customize the new file templates so that they only have access to some of the templates.

Regards,
Radu

Thanks Radu, that makes a lot of sense.
Best regards,
Ann

Hi Ann,

I prefer to use RelaxNG schemas, so when I create a new DITA file in Oxygen, I enter "RNG" in the search box to show me the available RelaxNG-format schemas.

I had similar questions about DITA schemas when I was new to DITA, so I attempted to collect answers to some of my past questions here:

#4066: In DITA, what do DTD, XSD, and RNG refer to?

Thank you for sharing that information chrispitude, that helps me understand the topic better,
Regards,
Ann