第3卷的基础上，一句格言： "以前的软件可以被设计，其要求必须充分理解，但与之前的规定能适当地表达领域的应用必须有充分的理解。 "这本书涵盖了从进程的发展，域名的描述，经推导要求处方从域模型，以更精确的需求转变为软件设计，也就是架构和组件设计。重点放在如何进入适当域说明，并要求医生处方，如何获取和分析领域知识和要求，期望，以及如何确认和验证域，并要求型号。 -Volume 3 is based on the maxim: "Before software can be designed its requirements must be well understood, and before the requirements can be expressed properly the domain of the application must be well understood." This book covers the process from the development of domain descr iptions, via the derivation of requirements prescr iptions from domain models, to the refinement of requirements into software designs, i.e., architectures and component design. Emphasis is placed on what goes into proper domain descr iptions and requirements prescr iptions, how one acquires and analyses the domain knowledge and requirements expectations, and how one validates and verifies domain and requirements models.