UML diagram UML stands for Unified Modeling Language. UML is a way of visualizing a software program using a collection of diagrams. Today, UML is accepted by the Object Management Group (OMG) as the standard for modeling software development. Types of UML diagrams The current UML standards call for 13 different types of diagrams: class, activity, object, use case, sequence, package, state, component, communication, composite structure, interaction overview, timing, and deployment. These diagrams are organized into two distinct groups: structural diagrams and behavioral or interaction diagrams. Structural UML diagrams Class diagram Package diagram Object diagram Component diagram Composite structure diagram Deployment diagram Behavioral UML diagrams Activity diagram Sequence diagram Use case diagram State diagram Communication diagram Interaction overview diagram Timing diagram Th most used and important UML diagrams are (: Sequence ...