Tiziana Catarci, Giuseppe Santucci. Query by Diagram: A Graphical Environment for Querying Databases. In Richard T. Snodgrass, Marianne Winslett, editors, Proceedings of the 1994 ACM SIGMOD International Conference on Management of Data, Minneapolis, Minnesota, May 24-27, 1994. pages 515, ACM Press, 1994. [doi]
Abstract is missing.