Hi all,

During my mock Zend PHP certification exams I have came across the following question that I have researched online but have not found a definitive, and understandable, answer to them. Can anyone advise what the answers to these may be or point me in the right direction?

What XML technology is used when you mix two different document types in a single XML document?

  1. Validators
  2. DTD
  3. Transformers
  4. Namespaces


Best Regards,
Picco