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Software Processes 2

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Software Processes 2

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    1. Software Processes (2) Yonsei University 2nd Semester, 2003 Sang-Hyun Park

    2. Software Specification The process of establishing what services are required and the constraints on the system’s operation and development This activity is often called requirement engineering.

    3. Software Design and Implementation The process of converting a system specification into an executable system It always involves processes of software design and implementation. The activities of design and implementation are closely related and may be inter-leaved.

    4. Design Process Activities

    5. Programming and Debugging Translating a design into a program and removing errors from that program Programming is a personal activity; there is no generic programming process. Programmers carry out some program testing to discover faults in the program and remove these faults in the debugging process.

    6. Software Validation Intended to show that a system conforms to its specification and meets the requirements of the system customer The testing process should proceed in stages where testing is carried out incrementally in conjunction with system implementation.

    7. Software Evolution Software is inherently flexible and can change. As requirements change through changing business circumstances, the software that supports the business must also evolve and change. Although there has been a demarcation between development and evolution (maintenance), this is increasingly irrelevant as fewer and fewer systems are completely new.

    8. Automated Process Support (CASE) CASE is software to support software development and evolution processes. CASE technology has led to some improvements in software quality and productivity, but the improvements have been less than 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.

    9. CASE Classification Classification helps us understand the different types of CASE tools and their support for process activities. Functional perspective Process perspective Integration perspective

    10. Function-Based Classification Planning tools Editing tools Change management tools Configuration management tools Prototyping tools Method-support tools Language-processing tools Programming analysis tools Testing tools Debugging tools Documentation tools Re-engineering tools

    11. Activity-Based Classification

    12. Integration-Based Classification

    13. - END OF CHAPTER 3 -

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