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CSC 480 Software Engineering

CSC 480 Software Engineering. Lecture 2. The Four P’s. The four P’s in software development People – in different roles working in a team Product – the working software system and associated artifacts

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CSC 480 Software Engineering

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  1. CSC 480Software Engineering Lecture 2

  2. The Four P’s • The four P’s in software development • People – in different roles working in a team • Product – the working software system and associated artifacts • Process – a set of activities that is performed in a certain order toward a special purpose • Project – a specific instance of building a software product

  3. Structured Programming • Use control constructs, avoid using goto • A hierarchy of functions, with those in higher levels calling those at lower levels • Modules tend to couple with each other, making change difficult

  4. Illustration – Structured Programming

  5. 1GL & Early 2GL

  6. Object-Orientation • Encapsulate data and functionality in objects • Mapping to real-world entities • Both congregation and inheritance hierarchies • Easier to modify and add components

  7. Illustration – Object Orientation

  8. Class & Object Hierarchies

  9. Small Applications Using OOPL

  10. Large Applications Using OOPL

  11. Reuse & Components • Reuse can reduce cost and improve quality • Reuse at component level is more effective • COM • JavaBeans • Example – a JClass chart by sitraka.com

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