Software Design Center

Associations and links
Draw a relationship between two objects with a single line. Associations connect classes, links connect objects. The qualified association is unique to the OMT notation. Place the qualifier box at the end of the association, near the class you want to qualify.
Learn how to connect classes and objects.

Linked Attribute
To describe the properties of a link or association, you can use an arc to attach an attribute to the relationship.

Multiplicity
Use line terminators to indicate how many instances of one class relate to a single instance of another class. Draw these line terminators using arrowheads available in SmartDraw.

Generalization or inheritance
Generalization refers to refining a superclass into subclasses. Each subclass inherits the attributes of the superclass. Draw this relationship by following the instructions on drawing a Yourdon & Coad whole-part relationship.