This document discusses software architecture and design patterns. It provides a historical perspective on design patterns and frameworks. It then defines what a design pattern is, explaining that patterns address general and recurring design problems. It also classifies design patterns into different categories. The document concludes by listing references used.

1. Software Architecture & Design
BY
Syed Salman Qadri
Assistant Professor (CS)
The Islamia University of Bahawalpur

2. Design Patterns

3. Design Patterns

4. Historical Perspective on DP

5. Historical Perspective on DP

6. Software Patterns

7. frameworks

8. Design Pattern

9. Design Pattern

10. Pattern Format

11. Pattern Format

12. Pattern Format

13. Pattern Format

14. Pattern Format

15. Pattern Format

16. Pattern Format

17. Classification of Design
Pattern

18. Classification of Design
Pattern

19. Classification of Design
Pattern

20. Classification of Design
Pattern

21. References
Requirements Engineering: Processes
• ‘
and Techniques’ by G. Kotonya and I.
Sommerville, John Wiley & Sons, 1998
• Software Requirements: Objects,
Functions, and States by A. Davis, PH,
2003
• Software Engineering 7th Edition, by I.
Sommerville, 2005
• Software Engineering 7th Edition, by R.
Pressman