Adegbemiga Ola, Gultekin Özsoyoglu. A Family of Incomplete Relational Database Models. In Peter M. G. Apers, Gio Wiederhold, editors, Proceedings of the Fifteenth International Conference on Very Large Data Bases, August 22-25, 1989, Amsterdam, The Netherlands. pages 23-31, Morgan Kaufmann, 1989. [doi]
Abstract is missing.