The object-oriented approach has evolved as a software design and programming method. It was later adapted to systems analysis as a modeling method. Modeling in systems analysis is used to create a representation of the organizational domain for which the information system is developed. Such a model is termed an enterprise model. A modeling method comprises a modeling technique and a modeling ...

In this paper, we present a method for designing operating systems using object-oriented frameworks. A framework can be re ned into subframeworks. Constraints specify the interactions between the subframeworks. We describe how we used object-oriented frameworks to design Choices, an object-oriented operating system. 1 Frameworks in an Object-Oriented