It usually refers to the relationship between an interface and the objects that implement it.ĭependency. This is a schematic representation of the relationship between a parent class and its descendants. In addition, we can also specify the multiplicity, that is, the number of objects that can take part in the relationship. Often we can also see a verb conveying its meaning.
Assuming we have two classes that interact, there must be a continuous connecting line between them, denoting an association in the diagram. Similar to relationships that connect objects, associations connect classes. In UML diagrams, there are most often these six types of relationships between classes:Īssociation. A class represents a concept that describes state ( attributes) and behavior ( methods). In other words, a class describes what an object can be. įor a deeper understanding, let's first recall what a class is.Ī class is a template for creating objects that provides initial state values: initializing fields` variables and implementing the behavior of fields and methods. Learn more about UML and its diagram types. What is a class diagram, and what is it used for?Ī UML (Unified Modeling Language) class diagram illustrates the structure of a system by describing the classes, their attributes, methods, and relationships between objects.
