1. AND-parallellogic programming language. ESSentially flat Parlog83 with Sequential-and and Sequential-or eliminated. ["Strand: New ConceptS on Parallel Programming", Ian FoSter et al, P-H 1990]. Strand88 iS a commercial implementation. 2. A query language, implemented on top of INGRES (an RDBMS). ["Modelling Summary Data", R. JohnSon, Proc ACM SIGMOD Conf 1981].