Diagram Type
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Description
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 Class Diagram
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Class Diagram is a visual expression of various static relations of class-related elements. Class Diagram can contain not only classes but also interfaces, enumerations, packages, various relations, instances, and their links.
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 Use Case Diagram
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Use Case Diagram is an expression of relations between the use cases in a specific system or object and the external actors. Use Case expresses the functions of the system and how the system functions interact with the external actors.
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 Sequence Diagram
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Sequence Diagram expresses the interactions of instances. It is a direct expression of the InteractionInstanceSet, which is a set of the stimuli exchanged between the instances within a CollaborationInstanceSet. While Sequence Role Diagram is a ClassifierRole-oriented expression, Sequence Diagram is an Instance-oriented expression.
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 Sequence Diagram (Role)
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Sequence Role Diagram expresses the interactions of the role concepts. It is a direct expression of the Interaction, which is a set of the messages exchanged between the ClassifierRoles within a Collaboration. While Sequence Diagram is an Instance-oriented expression, Sequence Role Diagram is a ClassifierRole-oriented expression.
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 Collaboration Diagram
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Collaboration Diagram expresses the collaboration between instances. It is a direct expression of the collaboration model of the instances within a CollaborationInstanceSet. While Collaboration Role Diagram is a ClassifierRole-oriented expression, Collaboration Diagram is an Instance-oriented expression.
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 Collaboration Diagram (Role)
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Collaboration Role Diagram expresses the collaboration between the role concepts. It is a direct expression of the collaboration model of the ClassifierRoles within a Collaboration. While Collaboration Diagram is an Instance-oriented expression, Collaboration Role Diagram is a ClassifierRole-oriented expression.
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 Statechart Diagram
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Statechart Diagram expresses the static behaviors of a specific object through states and their transitions. Although Statechart Diagram is generally used to express the behaviors for instances of classes, it can also be used to express behaviors of other elements.
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 Activity Diagram
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Activity Diagram is a special form of Statechart Diagram that is suitable for expressing the activity execution flow. Activity Diagram is commonly used for expressing workflow, and it is frequently used for objects like classes, packages, and operations.
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 Component Diagram
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Component Diagram expresses the dependency between the software components. The elements that constitute software components and the elements that implement those components can all be expressed by Component Diagram.
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 Deployment Diagram
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Deployment Diagram expresses the hardware elements of the physical computer and devices and the software components, processes and objects that are assigned to them.
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 Composite Structure Diagram
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Composite Structure Diagram is a diagram to express internal structure of Classifier. It is included in interaction point with other parts of system.
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