The Canonical Model and subset schemas evolve as new business and integration requirements are addressed. The creation of new definitions, the modification of existing definitions, and the release of updated industry standards requires robust version control capabilities with the ability to understand the impacts of changes to the model and to the XML schemas that are built off of it. igniteXML uniquely brings version control and real-time impact analysis to the model and schema development process allowing the people responsible for the model to evolve and control discrete definitions, understand the impact of changes, and make updates relevantly available.