XML White Papers
Semantic Adaptation of Schema Mappings When Schemas Evolve
Overview Schemas evolve over time to accommodate the changes in the information they represent. Such evolution causes invalidation of various artifacts depending on the schemas, such as schema mappings. In a heterogeneous environment, where cooperation among data sources depends essentially upon them, schema mappings must be adapted to reflect schema evolution. This paper explores the mapping composition approach for addressing this mapping adaptation problem. It studies the semantics of mapping composition in the context of mapping adaptation and compares the approach with the incremental approach of Velegrakis et al. The paper shows that the method is superior in terms of capturing the semantics of both the original mappings and the evolution.
| Publisher | University of Michigan | File Format | |
|---|---|---|---|
| Date Published | June 2005 | ||
| Format | White Papers | ||
| Topics | |||
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