A Systematic Approach for Changing XML Namespaces in XML Schemas and Managing their Effects on Associated XML Documents under Schema Versioning
Zouhaier Brahmia, Fabio Grandi, Rafik Bouaziz
Journal of Digital Information Management, Vol. 14, No. 5, 2016.
DOI: 
Link: http://dline.info/fpaper/jdim/v14i5/jdimv14i5_1.pdf
Abstract:
Although a lot of research work has been
done concerning schema changes that deal with basic
components of XML Schemas, like element and attribute
declarations, simple types, and complex type definitions,
the current literature of the XML database field does not
include any paper that studies changes of advanced
concepts of XML Schemas, like XML namespaces, local
(or global) qualified (or unqualified) declarations, and
schema definition styles (e.g., Russian Doll, Garden of
Eden). In this paper, we study how XML namespace
evolution is handled in an XML environment that supports
both schema and document versioning. To the best of
our knowledge, this is the first work on such a topic.
Indeed, we propose a systematic approach that allows
specifying changes on XML namespaces defined in XML
Schemas, and propagating their effects to underlying XML
documents, while maintaining all XML schema and XML
instance versions.