When we are modeling the system first of all we start is identifying things. These things will not stay alone. They collaborate with each other means they are connected with others in some way. These connections between the things are known as relationships. In object-oriented modeling, there are three main relationships between the things: 1) Dependency, 2) Associations and 3) Generalization. Dependency A dependency is a using relationship. In this relationship one thing depends on the other thing. The change in independent thing will affect the dependent thing. Dependency is graphically represented as a dashed directed line. The arrow head
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How to work with relationships in UML
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