1. Class Oriented Ring Associated Language.2. A deductive database and logic programming system based on Horn-clause rules with extensions like SQL' s group-by and aggregation operators.CORAL was developed at the University of Wisconsin-Madison.It is implemented in C++ and has a Prolog-like syntax.Many evaluation techniques are supported, including {bottom-up fixpoint evaluation} and top-down {backtracking}.{Modules} are separately compileddifferent evaluation methods can be used in different modules within a single program. Disk-resident data is supported via an interface to the Exodus storage manager.There is an on-line help facility. It requires AT&TC++ 2.0 (or G++ soon) and runs on Decstation and Sun-4..(1993-01-29)