Design

Solution space of the modeling phase
Logical implementation of the construction phase
It keeps evolving - self loop

Structure

Following standpoints are involved:

Inputs

• SRS
• Domain Knowledge
• Analysis Models
• Design Concepts & Principles
• Styles & Patterns
• Prior experience and creativity

Outputs

• Software Architecture
• Interface Design
• Component Level Design (Low Level)
  • DT
• Deployment Design, Class Design and so on …
  • DCD
  • DSD

Design Concepts

• Abstraction
  • Selective Examination
• Refinement
• Information Hiding (not really encapsulation)
• Refactoring
  • improve operation without altering functionality
• Modularity
• Functional Independence
  • Cohesion ${\uparrow }_{Maxmize}$
    • Single Mindedness
  • Coupling ${\downarrow }_{Minimize}$
    • Connectedness