incremental constraint solver

A system in which a constraint solver is given constraints

one at a time by an inference engine (as is found in

Prolog). The solver adds the new constraint to an initially

empty set of solved constraints. If the new constraint is

consistent with the solved constraints it will be added to the

set. If it was inconsistent, the inference engine

backtracks. This is the basis of Constraint LogicProgramming.

(1994-11-01)