XML schema refactorings for X-to-O mappings

Executive summary We deal with the overall problem of mapping XML schemas to object models, where the resulting object models are meant for pro-grammatic, schema-aware access to XML data. The provision of such 'X-toO mappings' involves various challenges; one of them is variation in style of schema organization. Without appropriate countermeasures, such variation affects the resulting object models in undue manner. We tackle this challenge by devising transformations for normalizing styles of schema organization , thereby improving the quality of X-toO mapping results.