javaprepare - XML Certification Tutorial

XML Namespace is a named collection of names
Qualified name - namespace prefix:local name
A namespace declaration applies to the element in which it is declared.
Unqualified attribute names do not belong to any namespace
Qualified attribute names belong to the associated namespace
Attributes are not explicitly part of any default namespace
Default namespace can be disabled by using an empty value in the default namespace declaration
XML namespaces do not work well with DTDs
An XML namespace is a collection of element type and attribute names
Two part naming system is he only thing defined by the XML namespace recommendation
XML namespaces contain names of element types and attributes not the elements or attributes themselves
If an element type or attribute name is not specifically declared to be in an XML namespace and there is no default namespace then that name is not in any XML namespace
XML namespaces do not apply to entity names, notation names or PI targets
No namespace declarations apply to DTDs
XML namespace prefix cannot be undeclared, it can be overridden by redeclaring the same namespace prefix to some other URI.