Method of dynamic connection of sub module with respect to main module and medium recording the same

PURPOSE: A dynamic connecting method of sub module about a main module is provided to enable a user or a manufacturer to perform easy addition, alternation, and deletion, thereby easily reflecting requirements of various users. CONSTITUTION: A basic screen is displayed on a screen of a user computer(100). The basic screen is formed by a main screen(110) of some kind of function. By an addition of a sub screen(120), an expanded screen is displayed on the screen. Transaction about a main database(117) and a sub database(127) is processed at once. The main storage stores a main data of a main module. A sub storage stores a sub data of a sub module.