owing an example of data stored in a business class management file;FIG. 3 is a diagram showing a processing flow at the time of creation of the business classes;FIG. 4 is a schematic diagram showing an object;FIGS. 5A to 5H are diagrams showing examples of codes to use the object;FIGS. 6A and 6B are functional block diagrams at the time of execution of the business classes;FIG. 7 is a diagram sho