Kai Schlamp <stroncococcus@g...> wrote in
<1193862601.833480.71940@5...>:
> <xs:complexType name="textareaType">
> <xs:simpleContent>
> <xs:restriction base="xs:string">
> <xs:attribute ref="label" use="required" />
> </xs:restriction>
> </xs:simpleContent>
> </xs:complexType>
> 
> But W3C Schema validator tells me there is an error
> (derivation of complex type by restriction of simple type
> not allowed),

Guess what? They're right.

> even if w3schools writes, that this should be valid code
> (http://www.w3schools.com/schema/schema_complex_text.asp).

I'm of very low opinion of w3schools in general, but in this
case they don't assert anything of the sort. They just
didn't mention that a complex type may not be a restriction
of a simple type.

> I also checked the original Schema reference
> (http://www.w3.org/TR/ xmlschema-1/), that points out:
> "Note that either <restriction> or <extension> must be
> chosen as the content of <simpleContent>."

You should've checked 2.2.1.3 as well.

Since you forgot to mention what it is that you're trying to
achieve, I'll refrain from giving any further advice.

-- 
"I can't help but wonder if you... don't know a hell of a
lot more about practically every subject than Solomon ever
did."