Name 

Description 

Association Class and N-ary Association 

Association classes appear in diagrams as three related elements:

• Association class itself (represented by a class icon)
• N-ary association class link (represented by a diamond)
• Association connector (represented by a link between both)

Association classes can connect to as many association end classes (participants) as required.
The Object Inspector of an association class, association link, and connector contain an additional Association tab. This tab contains the only label property, its value being synchronized with the name of the association class. For the association classes and association end links, the Custom node of the Object Inspector displays additional properties that corresponds... more 

Class Diagram Relationships 

There are several kinds of relationships:

• Association: A relationship between instances of the two classes. There is an association between two classes if an instance of one class must know about the other to perform its work. In a diagram, an association is a link connecting two classes. Associations can be directed or undirected. A directed link points to the supplier class (the target). An association has two ends. An end may have a role name to clarify the nature of the association. A navigation arrow on an association shows which direction the association can be traversed or queried.... more 

Class Diagram Types 

There are two types of class diagrams used in Modeling:

• Package (namespace) diagrams. These diagrams are referred to as package diagrams in design projects, and namespace diagrams in implementation projects. They are stored as XML files in the ModelSupport_%PROJECTNAME% folder of the project group with the file extension .txvpck.
• Logical class diagrams. These diagrams are stored as XML files in the ModelSupport_%PROJECTNAME% folder of the project group with the file extension .txvcls.

Modeling automatically creates a default namespace diagram for the project and for each subdirectory under the project directory. The default project diagram is named default; the... more 

Inner Classifiers 

The table below lists the diagram container elements along with the inner classifiers that you can add to container elements.
Inner classifiers  

Rules of Synchronization Between Models and Source Code 

The impact of changing a class, interface, or namespace on a logical class diagram varies according to the kind of change:

• Changing the name, adding a member, creating a new link, or applying a pattern makes the corresponding change in the actual source code.
• Choose Delete from View on the context menu of the element to remove the element from a current diagram and keep the element in the namespace (package).
• Choose Delete on the context menu to completely remove the element from the model.
• When you press Delete on the keyboard, the Delete from view command is applied, if... more 

Members 

Note that the set of available members is different for the design and implementation projects.
The table below lists the diagram elements along with the members that can be added using the context menu of the element. The type of applicable project is specified in square brackets.
Members available  

UML 2.0 Class Diagram Definition 

UML 2.0 Class diagrams feature the same capabilities as the UML 1.5 diagrams.
The UML 2.0 class diagrams offer new diagram elements such as ports, provided and required interfaces, and slots.
According to the UML 2.0 specification, an instance specification can instantiate one or more classifiers. You can use classes, interfaces, or components as a classifier. 

UML 2.0 Class Diagram Elements 

The table below lists the elements of UML 2.0 class diagrams that are available using the Tool Palette.
UML 2.0 class diagram elements