Schema Evolution publication categorizer

Most available approaches for XML schema evolution spec-
ify the evolution steps for an XML schema or a DTD. This article will
show that schema evolution can also be realized on a conceptual model.
Schema evolution always requires propagating the changes to the XML
documents that are already associated to the schema. This article sug-
gests a method for conceptual schema evolution concerning all these
subtasks. It is implemented in a tool called CoDEX (Conceptual Design
and Evolution of XML schemas).