It may contain additional responsibilities. Use case is represented as an eclipse with a name inside it. Generally, responsibilities are in a group. It has a name written inside the eclipse.Ĭollaboration represents responsibilities. Collaboration NotationĬollaboration is represented by a dotted eclipse as shown in the following figure. ![]() When a class implements the interface, it also implements the functionality as per requirement. Interface is just likeĪ template where you define different functions, not the implementation. Interface is used to describe the functionality without implementation. It has a name which is generally written below the circle. Interface is represented by a circle as shown in the following figure. Hence, it has the same usage as the class. The only difference is the name which is underlined as shown in the following figure.Īs the object is an actual implementation of a class, which is known as the instance of a class. The object is represented in the same way as the class. Objects can be anything having properties and responsibility. The fourth section is optional to show any additional components.Ĭlasses are used to represent objects.The third section is used to describe the operations performed by the class.The second one is used to show the attributes of the class.The top section is used to name the class.UML class is represented by the following figure. Following are the list of structural things. These are considered as the nouns of UML models. Graphical notations used in structural things are most widely used in UML. This is just an extension to the UML building block section discussed in Chapter Two. The chapter describes basic UML notations in detail. Extensibility is another important feature which UML diagrams are made using the notations of things and relationships. Different notations are available for things and relationships. Hence, learning notations should be emphasized from the very beginning. The model is useless, unless its purpose is depicted properly. Efficient and appropriate use of notations is very important for making a complete and meaningful model. UML notations are the most important elements in modeling. Hence, visualization is the most important part which needs to be understood and remembered. We all know that UML is for visualizing, specifying, constructing and documenting the components of software and non-software systems. UML is popular for its diagrammatic notations.
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