武汉理工软件工程课件1.ppt

1、What is software?,Computer programs and associated documentation and configuration data. Software products may be developed for a particular customer or may be developed for a general market. Software products may be Generic - developed to be sold to a range of different customers . e g. databases,

2、word processor ,drawing packages and project management tools,What is software?,Bespoke (custom) - developed for a single customer according to their specification. e g. control systems for electronic devices, systems written to support a particular business and air traffic control systems. The diff

3、erence between these software: 1. Generic products the organization which develops the software controls the software specification. 2. Custom products- the specification is usually developed and controlled by the organization that is buying the software.,What is software engineering?,Software engin

4、eering is an engineering discipline which is concerned with all aspects of software production. Software engineers should adopt a systematic and organised approach to their work and use appropriate tools and techniques depending on the problem to be solved, the development constraints and the resour

5、ces available.,Software Engineering,The purpose and significance of SE The Challenges and Opportunities of the Global Software Industry. Talent Beyond Technology _What Kind of Talent We Need for Modern Software Development Erroneous in point of Software Development,Main Sections,Classic Methodology

6、of Software Engineering Modeling Approaches of Object-Oriented Software Project Management & CMM Software Reuse & Component Engineering,reference book,R.S. Pressman . Software Engineering:A Practitioners Approach, 6/e 许家珆 主编,软件工程方法与实践,高等教育出版社,Chapter 1 Generic View of SE,1.1 The emergence and develo

7、pment of SE 4 Important Stages: 1. Classic SE 2. Object Engineering 3. Process Engineering 4. Component Engineering,1.2 Process and Life Cycle of SE,Software engineering process,What is a software process?,A set of activities whose goal is the development or evolution of software. Generic activities

8、 in all software processes are: 1. 1. Specification - what the system should do and its development constraints. 2. Development - production of the software system. Validation - checking that the software is what the customer wants. 3. Evolution - changing the software in response to changing demand

9、s.,A Layered Technology,Software Engineering,a “quality” focus,process model,methods,tools,A Process Framework,Process framework Framework activities work tasks work products milestones & deliverables QA checkpoints Umbrella Activities,Framework Activities,Communication Planning Modeling Analysis of

10、 requirements Design Construction Code generation Testing Deployment,Umbrella Activities,Software project management Formal technical reviews Software quality assurance Software configuration management Work product preparation and production Reusability management Measurement Risk management,1.3 Pr

11、escriptive Process Models,Prescriptive process models advocate an orderly approach to software engineering That leads to a few questions If prescriptive process models strive for structure and order, are they inappropriate for a software world that thrives on change? Yet, if we reject traditional pr

12、ocess models (and the order they imply) and replace them with something less structured, do we make it impossible to achieve coordination and coherence in software work?,The Waterfall Model,The Incremental Model,The RAD Model,Evolutionary Models: Prototyping,Evolutionary Models: The Spiral,Evolution

13、ary Models: Concurrent,Still Other Process Models,Component based developmentthe process to apply when reuse is a development objective Formal methodsemphasizes the mathematical specification of requirements AOSDprovides a process and methodological approach for defining, specifying, designing, and construct