摘要:
Executing the steps of: receiving information of customer orders and information of prospect orders and storing into a received order database 20; dividing orders stored in said received order database 20 based on a reference master having various kinds of information about production materials registered therein, and storing the information of the orders which have been subjected to the division process to a received order division database 21; applying a process development to the orders which have been subjected to the division process, based on a basic unit master and storing into a process development database 22; specifying an optimum production starting date based on the information of orders which have been subjected to the process development and a production pattern stored in a production pattern database, performing loading, and storing results of the loading into a production planning database 23; and creating delivery date answer information, based on said optimum production starting date stored in the production planning database 23.