JOINT WORK SUPPORTING SYSTEM

PURPOSE:To prevent a duplicate use permission by preparing a use declaration file, and permitting the use of data, when the generated use declaration file is for the own use request by waiting for a prescribed period of time after the generation is completed. CONSTITUTION:In a state that use of resources A, B is permitted already, when a use request for the resources B is executed from a user Z, its request is refused (a). In this case, plural resources (A-C) 111 are subjected to centralized control, a use declaration 115 is executed for necessary resources 111, reconfirmation 116 of its answer is executed, and in the case a user does not exist else to the same resources 111, they are used as they are (b). On the other hand, in the case a user who execute the use declaration exists else, permission or non-permission of its use is determined by a prescribed reference. In such way, resources for service increase without increasing a burden of a resources superintendent.