The objects are constructed from the framework provided by the class. Class can belong to other classes, or Meta-Classes . Operations are an implementation of a service that can be requested from any object of the class in order to affect behavior. Here you can define the attributes for the class. This type of relationship is called a generalization in Visio Enterprise.
Classes can inherit from more than one parent.
For example, a car is a transportation mode and an emitter of pollutants. Here, Car Owner is the role of the person. You can assign roles to both ends of an association. The multiplicity indicates that you can have 1 to n persons or cars. Because this association is between two classes, it is a binary association .