Expressiveness and Complexity of Bidirectional Constraints for Data Exchange.
Marcelo Arenas, Gabriel Diéguez, Jorge Pérez · 2014
A schema mapping is a high-level specification that describes how data from a source schema is to be mapped to a target schema. Schema mappings are of fundamental importance in data management today. In particular, they have proved to be the essential building block for several data-interoperability tasks such as data exchange [8], data