20. A method of generating a source program in an information processing system having processing means and memory means comprising: storing into said memory means various schematic information items including a structure of program modules, processing flow, internal data definition and interface data definition; inputting the schematic information items from said memory means to said processing means; and generating the source program based on inputted schematic information items in said processing means.
20. A method of generating a source program in an information processing system having processing means and memory means comprising: storing into said memory means various schematic information items including a structure of program modules, processing flow, internal data definition and interface data definition; inputting the schematic information items from said memory means to said processing means; and generating the source program based on inputted schematic information items in said processing means. 21. A method of generating a source program according to claim 20, wherein said information processing system further includes a display terminal, the method further comprising the step of editing said schematic information items to be stored in said memory means by conversational operations through said display terminal.