Table of contents

Appendices

2.2 Use of IRIs as Namespace Names

add The empty string, though it is a legal IRI reference, cannot be used as a namespace name.

add The use of relative IRI references, including same-document references, in namespace declarations is deprecated.

NOTE: 

This deprecation of relative URI references was decided on by a W3C XML Plenary Ballot [reluri] . It also declares that "later specifications such as DOM, XPath, etc. will define no interpretation for them".