Associating a Schema With the Namespace of the Root ElementHistory | Edit
The namespace of the root element of an XML document can be associated with an XML Schema
using an XML catalog. If there is no
xsi:schemaLocation attribute on the root element and the XML document is
not matched with a document type, the
namespace of the root element is searched in the XML catalogs set in Preferences.
If the XML catalog contains a uri or rewriteUri or
delegateUri element, its schema will be used by the application to drive
the content completion and
document validation.