1. A computer system having a data base and process controls, comprising: an instruction processing unit; an associative memory; process control means for performing a lazy evaluation of memory containing said data base, including a lazy evaluator means for processing tasks when there is a near expected change to have a guarantee of success of a match request; working memory element (WME) control means for matching working memory elements according to rules and providing for rapid WME delete action, and an underlying content addressable memory CAM, and language construct control operator means for accessing tuples in memory and for accelerating operational matching of match queries by use of system components.