17
The XML Schema worldview
n Validity and well-formedness are XML 1.0
concepts
ä They are defined over character sequences
n Namespace-compliant is a Namespace concept
ä It's defined over character sequences too
n Schema-validity is the XML Schema concept
ä It is defined over XML document Infosets
n So the whole XML Schema exercise is
predicated on and layered on top of XML 1.0
well-formedness plus Namespaces
ä Because they are constitutive of the Infoset