Semantic Adaptation of Schema Mappings when Schemas Evolve

Yu, Cong; Popa, Lucian
VLDB 2005: 1006-1017

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 heterogenous environment,
where cooperation among data sources depends essentially
upon them, schema mappings must be adapted to reflect
schema evolution. In this study, we explore the mapping
composition approach for addressing this mapping adaptation
problem. We study the semantics of mapping composition
in the context of mapping adaptation and compare

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