Juha Kontinen, Sebastian Link, Jouko A. Väänänen. Independence in Database Relations. In Leonid Libkin, Ulrich Kohlenbach, Ruy J. G. B. de Queiroz, editors, Logic, Language, Information, and Computation - 20th International Workshop, WoLLIC 2013, Darmstadt, Germany, August 20-23, 2013. Proceedings. Volume 8071 of Lecture Notes in Computer Science, pages 179-193, Springer, 2013. [doi]
Abstract is missing.