Levels - controls the number of levels being shown for the diagram. Use Orthogonal Lines - controls whether orthogonal lines or direct lines are used to connect nodes on the diagram. In addition to the classic diagram options, the state transition diagram settings include: Drag a handle at a bend in the line to move that line segment. Drag the handle at the connection point with the node to control where the line connects to the node. Individual lines can be repositioned as well. Then you can customize node positions as desired. GENESYS begins with a simple layout for the nodes but offers several layout options to choose from. The class diagram is a free-form diagram. For example, a cat would be a specialization of an animal, where a cat is the child inheriting the functionality of the parent animal. The child class is considered a specialization of the parent class. A generalization relationship is a type of relationship that establishes an associated class as a child (subclass) of another by assuming inheritance of the functionalities of the parent (superclass). However, if the house ceased to exist, the rooms would no longer exist, as their existence is dependent on the existence of the house. For example, a house is a composition of rooms. A composition is similar to the aggregation, with the difference being the emphasis on dependence.

For example, a course is an aggregation of students.Ĭomposition. An aggregation shows the formation of a particular class as a result of one class being “aggregated” or built as a collection. An association can be either bidirectional or unidirectional.Īggregation. An association is an abstract term that can represent any relationship between two classes.

Essentially, one entity requires, needs, or depends on the other for specification or implementation.Īssociation. A dependency relationship exists between two entities if changes to the definition of one entity may cause changes to the other. The types of relationships include:ĭependency. One of the primary benefits of this diagram is the ability to reflect different types of relationships between two or more entities within your system. Though most frequently used to reflect software design architecture, the flexibility of the class diagram makes it a useful addition to a library of integrated system representations. It shows the system’s classes and optionally displays their attributes, operations, and relationships among the entities. Class Diagram (available in the SysML base view set)īridging the gap between systems and software engineering, the class diagram displays the static structure and composition of a system.

Class diagram program free