Introduction to Disciplines A discipline provides a view into the underlying process elements within RUP（统一软件开发过程） from the perspective of a general discipline of skills. Each discipline describes a set of associated activities and artifacts based around a common skillset. RUP describes disciplines at an overview level-a summary of all roles, activities, and artifacts that require a given set of skills to perform the discipline. We also show, at a more detailed level, how roles collaborate to achieve useful goals, even where those roles are based on different disciplines. The work performed at this detailed level is termed “workflow details”.	Descriptions of Disciplines Each discipline is described as follows:				—	—		Introduction Purpose of the discipline and relationships to other disciplines.	Introduction Icon		Concepts Key concepts that are important in order to understand the discipline.	Concepts Icon		Workflow（工作流） A typical sequence of events when conducting the flow of work, expressed in terms of workflow details. A workflow detail is a grouping of activities that are done “together”, presented with input and resulting artifacts.