UML- iteration 2: More mode

1, an initial stage before the stage of refinement iterations + 1 provide the basic analysis and design techniques widely used objects. The iteration 2, the case studies only emphasize:

Object Design and modes: 

1 ), the basic object design (based on responsibilities and GRASP)
 2 ), use patterns to create robust design (GoF Design Patterns)
 3), the application of UML to make the model to visualize 
the content is the main objective and critical book technology.