Software System Engineering:Software System Engineering:A Tutorial

Richard H. Thayer, Ph.D.

Presenter : MINJAE LEE

Class : Software Modeling & Analysis, 2008 Fall

ContentsContents

• Introduction

• System and System EngineeringSystem and System Engineering

• Software System Engineering

F ti f S ft S t E i i• Function of Software System Engineering

• Summary and Conclusionsy

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INTRODUCTIONINTRODUCTION

• Software systems have become larger and more complex than ever

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Example of this conceptExample of this concept

Air trafficcontrol system environment.

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SYSTEM and SYSTEM ENGINEERINGSYSTEM and SYSTEM ENGINEERING

• System– A collection of elements related in a way that

allows the accomplishment of a common object

• System Engineering

– The overall technical management of a system-development project

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SOFTWARE SYSTEM ENGINEERING (SwSE)

• A technical and management processA technical and management process

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SwSE and software engineeringSwSE and software engineering

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SwSE and project managementSwSE and project management

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THE FUNCTION OF SwSETHE FUNCTION OF SwSE

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Requirement analysisRequirement analysis

• Determine needs and constraints by analyzing system requirements allocated to software

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Software designSoftware design

• Determine ways to satisfy requirements and constraints, analyze possible solutions, and select the optimum one

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Process planningProcess planning

• Determine product development tasks, precedence, and potential risks to the project

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Process planning (cont )Process planning (cont.)

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Process controlProcess control

• Determine methods for controlling project and process, measure progress, and take corrective action where necessary

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Process control (cont )Process control (cont.)

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Verification lid ti d t tiVerification, validation and testing (VV&T)

• Evaluate final product and documentationEvaluate final product and documentation

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SUMMARY AND CONCLUSIONSSUMMARY AND CONCLUSIONS

• SwSE is not cheap, but it cost effective

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