Can I use qualified names in DTDs?

XML Interview Questions and Answers

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88. Can I use qualified names in DTDs?

Yes.
For example, the following is legal:

<!ELEMENT google:A (google:B)>
<!ATTLIST google:A
google:C CDATA #IMPLIED>
<!ELEMENT google:B (#PCDATA)>

However, because XML namespace declarations do not apply to DTDs , qualified names in the DTD cannot be converted to universal names. As a result, qualified names in the DTD have no special meaning. For example, google:A is just google:A -- it is not A in the XML namespace to which the prefix google is mapped.
The reason qualified names are allowed in the DTD is so that validation will continue to work.

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