Evolution von XML-Schemata auf konzeptioneller Ebene - Übersicht: Der CodeX-Ansatz zur Lösung des Gültigkeitsproblems

If new requirements arise models have to be adapted to them. Additionally, the instances based on these models have to be adapted as well otherwise they might not be valid anymore. The same applies to the XML schema as a model and widely accepted description for XML documents. One solution for solving the occurring validity problem is the here described XML schema evolution. On the basis of a conceptual model the user interaction is analyzed and translated into transformation steps for the adaption of XML instances. The user interaction contains the use of predened change operations on the conceptual model, a representation of the corresponding XML schema