Uml Interface Notation. The association from one class to another class flows in a single direction only. Efficient and appropriate use of notations is very important for making a complete and meaningful model.
An interface may be shown using a rectangle symbol with the keyword interface preceding the name. In uml 1 4 interface was formally equivalent to an abstract class with no attributes and no methods and only abstract operations. The model is useless unless its purpose is depicted properly.
It is represented by a dotted ellipse with a name written inside it.
An interface symbol cannot be instantiated. The model is useless unless its purpose is depicted properly. A class diagram in the unified modeling language uml is a type of static structure diagram that describes the structure of a system by showing the system s. The association from one class to another class flows in a single direction only.
