This document discusses pattern-based design and design patterns. It defines a design pattern as a three-part rule expressing the relationship between a certain context, problem, and solution. Effective design patterns solve problems, are proven concepts, and describe relationships. Recognizing patterns, searching for how others have addressed them, and applying patterns are key steps in pattern-based design. Patterns can be applied at different levels including data, architecture, components, and user interfaces. Pattern-based design saves time and money as patterns are proven methods that can be reused.

1. Long time back.....

3. Today

5. 2500 BC
2013

7. A new Car!

9. O
b
v
i
o
u
s

10. reinvent
the Wheel

11. Pattern Based Design

12. Design Pattern
Describing a Pattern
Pattern Language and Repositories
Types of Pattern

13. Design Pattern
be characterized
“A design pattern canbetween a certainas a three-part rule whicha
expresses a relation
context, a problem, and
solution.
”

14. Effective Design Pattern ?
It solves a Problem
It is a proven concept
It describes a relationship

15. Describing a pattern
1
•Recognize a
pattern
2
•Search
whether
others have
addressed
them
3
•Apply it.

16. Pattern Based Design in context

17. Types of
Pattern
Data/Content
Architecture
Componentlevel
User interface

18. A pattern-organizing table

19. In the end

20. We ask…………..
Why use Pattern Based Design?
It saves time
Is a proven method
Can be reused
Saves coding cost

21. ……….And thus it ended with a happy note.