Computerised modelling

摘要

A computerised modelling system (30) has an interface (31) which is used to create a problem domain by inputting data attributes to instantiate operational objects (32) and store them in an object store (35). A problem is solved by instantiating a solution object (36) from a class which is hard-coded for problem solving. Success of problem solving is indicated if the solution object (36) is committed by being written to the object store (35). The problem solving processing is carried out by a setup constraint (37) of the solution object. The setup constraint (37) instructs constraint methods of the operational objects (32) to interact with linked operational objects and output True or False outputs. A False output causes automatic rollback and there is therefore atomic processing. <IMAGE>