1. CSC 480 Software 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