[工学]软件工程第四章课件.ppt

RUP phase model 起初 RUP phases Inception Establish the business case for the system. Elaboration Develop an understanding of the problem domain and the system architecture. Construction System design, programming and testing. Transition Deploy the system in its operating environment. RUP good practice Develop software iteratively Manage requirements Use component-based architectures Visually model software Verify software quality Control changes to software Computer-aided software engineering Computer-aided software engineering (CASE) is software to support software development and evolution processes. Activity automation Graphical editors for system model development; Data dictionary to manage design entities; Graphical UI builder for user interface construction; Debuggers to support program fault finding; Automated translators to generate new versions of a program. CASE technology CASE technology has led to significant improvements in the software process. However, these are not the order of magnitude(重大) improvements that were once predicted Software engineering requires creative thought - this is not readily automated; Software engineering is a team activity and, for large projects, much time is spent in team interactions. CASE technology does not really support these. CASE classification Classification helps us understand the different types of CASE tools and their support for process activities. Functional perspective Tools are classified according to their specific function. Process perspective Tools are classified according to process activities that are supported. Integration perspective Tools are classified according to their organisation into integrated units. Functional tool classification T o o l t y p e E x a m p l e s P la n n i n g t o o ls P ERT t o o l s , e s t im at i o n t o o ls , s p r e a d s h e et s E d it i n g t o o ls Te x t e di t o rs , d i a g r a m e d i t o rs , w o r d p r o c e ss o rs C h a n ge ma na g e m e n t t