Abstract: A software object is positioned in structures, such as a functional structure, location structure and order structure, where each structure consists of a hierarchy of software objects. In each structure the software object inherits security from other software objects in the hierarchy. Since the software object is inserted into multiple hierarchical structures the security of the software object is inherited from software objects in multiple hierarchical structures. The user authority to interact with a software object is, in addition to the identity of the user logged in, dependent on the inherited security of the software object. As a software object is inserted, deleted and moved in a hierarchical structure the security of the software object changes.

Abstract: The security and user authority in a computer system, such as a control system, is based on dynamic relationships between software objects in multiple structures. In this way user authority is adapted to a current state of the control and manufacturing execution system, such as to adapt to a product making progress through a process. A software object is positioned in structures, such as a functional structure, location structure and order structure, where each structure consists of a hierarchy of software objects. In each structure the software object inherits security from other software objects in the hierarchy. Since the software object is inserted into multiple hierarchical structures the security of the software object is inherited from software objects in multiple hierarchical structures. The user authority to interact with a software object is, in addition to the identity of the user logged in, depending on the inherited security of the software object.