Ronald Fagin, Phokion G. Kolaitis, Alan Nash, Lucian Popa. Towards a theory of schema-mapping optimization. In Maurizio Lenzerini, Domenico Lembo, editors, Proceedings of the Twenty-Seventh ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, PODS 2008, June 9-11, 2008, Vancouver, BC, Canada. pages 33-42, ACM, 2008. [doi]
Abstract is missing.