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UMLSoftware modeling

  1. What is dependence? A simple understanding is that a class A uses class B, but this usage relationship is casual, temporary and very weak. The change of class B will affect class A.
  2. Display dependency and implicit dependency
  3. Rely on inversion: we must rely on high-level business, and do not rely on concrete implementation of low level business, and rely on concrete abstraction.


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