Tsur, Shalom; Zaniolo, Carlo "LDL: A Logic-Based Data-Language"

Wesley W. (1986) Wesley W. Chu, Georges Gardarin, Setsuo Ohsuga, Yahiko Kambayashi (Eds.): Twelfth International Conference on Very Large Data Bases, August 25-28, 1986, Kyoto, Japan, Proceedings. Morgan Kaufmann  

Languages mentioned LDL {1984}