Database Systems for Advanced Applications: 25th International Conference, DASFAA 2020, Jeju, South Korea, September 24–27, 2020, Proceedings, Part III - Nah; Cui, Bin; Lee, Sang Won; Moon, Yang-Sae; Nah, Yunmook; Whang, Steven Euijong; Yu, Jeffrey Xu (Springer International Publishing, 2020)