Object-Oriented Programming and Design

  1. Relationships Between Classes
    1. Association
      1. Has-A Relationship
        1. Loosely Coupled Relationship
        2. Cardinality
          1. One-to-One
            1. One-to-Many
              1. Many-to-Many
              2. Bidirectional vs Unidirectional Association
              3. Aggregation
                1. Stronger Has-A Relationship
                  1. Whole-Part Relationship
                  2. Independent Lifecycles
                    1. Aggregated Objects Can Exist Independently
                  3. Composition
                    1. Strongest Has-A Relationship
                      1. Ownership and Containment
                      2. Dependent Lifecycles
                        1. Part Cannot Exist Without Whole
                      3. Dependency
                        1. Uses-A Relationship
                          1. Temporary Association
                          2. Transient Relationship
                            1. Dependency Injection

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                        4. Key Language Constructs and Concepts

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                        6. Principles of Object-Oriented Design