Propagating Dependencies under Schema Mappings: A Graph-based Approach
Schema mapping plays an important role in many database-related transformation tasks, such as data exchange, data integration and data migration. In this paper, we study the dependency propagation problem in the context of schema mappings. This allows us to understand and discover logical consequences among source constraints, target constraints and mapping constraints of a schema mapping. In order to precisely characterize the relationships between source and target schemas, we consider...[Show more]
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