Abstract: The invention includes: a model management unit configured to manage a chain of supply-related task as a model; a role management unit configured to assign a role to an executor of each of the tasks to manage the roles; a task access authority setting unit configured to set a task-specific access authority for each of the roles to generate task access authority information; and an access control unit configured to, when access from the executor of each of the tasks is received, refer to the task access authority information based on the role assigned to the executor and perform access control. With such configurations, detailed access control can be performed for a chain of supply-related tasks.

Abstract: An access control system includes: a model management unit that manages a chain of supply-related tasks as a model; a case data management unit that manages an execution history of the supply-related tasks as case data; an execution facility data management unit that manages identification information of a facility that performs the task as execution facility data in association with case identification information; a belonging facility management unit that manages a facility to which an executor of the task belongs; and an access control unit that refers to the execution facility data when access from the executor of the task is accepted, and permits access to a case associated with the facility to which the executor belongs. With such a configuration, detailed access control can be performed for the chain of the supply-related tasks.