Conceptual Modeling 38th International Conference, ER 2019, Salvador, Brazil, November 4-7, 2019, Proceedings - Laender, Alberto H. F.; Laender, Alberto H. F.; Pernici, Barbara; Pernici, Barbara; Lim, Ee-Peng; Lim, Ee-Peng; de Oliveira, José Palazzo M.; de Oliveira, José Palazzo M. (Springer International Publishing : Imprint: Springer, 2019)