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Please have a thought. If this feature is already available then please
let me know so that I can implement it.
a CDATA section is just a syntactic convenience, <x><![CDATA[aaa]]></x>
means exactly the same as <x>aaa</x> so schema languages do not allow
any significance to be placed on CDATA sections, just as they do not
allow significance to be placed on whether " or ' is used to surround an
attribute value: <a b="2"/> means the same as <a b='2'/>.
sometimes we need some sort
of constraints to be there to check data type before manipulation.
Most schema languages (other than DTD) allow constraints to be placed on
text node children of elements (which then apply whether or not the
author has used the CDATA section syntax) W3C XML Schema, Relax NG, or
Schematron for example could all specify a constraints of various sorts
on the content of elements.
If you said what schema language you were using, and what types of
constraints you wanted to enforce, someone would be able to offer
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