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SWE 513

SWE 513. OVERVIEW Fall 2003 Dr. Ayşe Başar Bener. Overview. What is software? Computer programs and associated documentation Generic products Customised products What is software engineering? Concerned with all aspects of software production Engineering discipline

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SWE 513

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  1. SWE 513 OVERVIEW Fall 2003 Dr. Ayşe Başar Bener

  2. Overview • What is software? • Computer programs and associated documentation • Generic products • Customised products • What is software engineering? • Concerned with all aspects of software production • Engineering discipline • All aspects of software production

  3. Overview • Diffference between computer science and software engineering? • CS is theory and fundamentals, SWE is practicalities of developing and delivering useful software. • What is a software process? • A set of activities whose goal is the development or evolution of software • Software specification • Software development • Software evolution

  4. Overview • What is a software process model? • A workflow model • A data-flow or activity model • A role/ action model • The waterfall approach • Evolutionary development • Formal transformation • System assembly from reusable components

  5. Overview • What are the costs of SWE? • 60% development, 40% testing • What are SWE methods? • System models: object models, data-flow models • Rules: every entity in a system model must have a unique name • Design advice: no object should have more than seven sub-objects associated with it. • Process guidance: object attritubtes should be documented before defining the operations associated with an object.

  6. Overview • What is CASE (Compter-Aided SWE) • Sw systems which are intended to provide automated support for software process activities • What are the attibutes of good software? • Should deliver the required functionality and performance to the user and should be maintainable, dependable and usable. • What are the key challanges facing SWE? • Coping with legacy systems, coping with increasing diversity and coping with demands for reduced delivery times.

  7. Overview • Professional and ethical responsibility • Confidentiality • Competence • Intellectual property rights • Computer misuse

  8. Summary • SWE is an engineering discipline which is concerned with all aspects of sw production • Sw products consist of developed programs and associated documentation. Essential product attributes are maintainability, dependability, efficiency and usability. • The sw process consists of activities which are involved in developing sw products. Basic activities are sw specification, development, validation and evolution. • Methods are organised ways of producing sw. They include suggestions for the process to be followed, the notations to be used, rules governing the system descriptions which are produced and design guidelines.

  9. Summary • CASE tools are sws systems which are designed to support routine activities in the sw process such as editing design diagrams, checking diagram consistency and keeping track of program tests which have been run. • Sw engineers have responsibilities to the engineering profession and society. They should not simply be concerned with technical issues. • Professional societies publish codes of conduct which set out the standards of behaviour expected of their members.

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