PURPOSE: To prevent such a case where another updating program is carried out before executing an updating program that should be processed in advance among plural updating processing programs that must be processed in a fixed sequence.

CONSTITUTION: An updating information storage part 5 stores an updating date, the next scheduled updating date, and a program to be carried out in advance with the correspondence to an updating program name. A menu display means 2 is started by an input/output part 1 for execution of the selection of an updating program and the input of an updating date. An updating sequence check means 3 refers to the contents of the part 5 to check whether the scheduled updating date of the selected updating program is coincident with the input updating date or not and whether a program to be carried out exists or not. Furthermore, the means 3 checks whether the processings are already carried out or not up to the input updating date even if the program to be carried out in advance exists. Then, an updating program executing means 7 carries out the selected updating program only when the due conditions are satisfied. Then, a date updating means 4 refers to a closing date table storage part 6 to update the updating date and the scheduled updating date stored in the part 5.