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Structural things

Structural things define the static part of the model. They represent the physical and conceptual elements. Following are the brief descriptions of the structural things.

Class

Class represents a set of objects having similar responsibilities.

Interface

Interface defines a set of operations, which specify the responsibility of a class.

Collaboration

Collaboration defines an interaction between elements.

Use case

Use case represents a set of actions performed by a system for a specific goal.

Component

Component describes the physical part of a system.

Node

A node can be defined as a physical element that exists at run time.