Timing Diagram - UML 2 Diagrams

Timing Diagram

Timing Diagram is also a new artifact in UML 2.0. It shows the behavior of the object(s) in a given period of time. Timing diagram is a special form of a sequence diagram. The differences between timing diagram and sequence diagram are the axes are reversed so that the time are increase from left to right and the lifelines are shown in separate compartments arranged vertically. VP-UML supports both discrete timing and the general value lifeline style.

[ Feature List | Timing Diagram Demo ]

Timing Diagram Sample

Timing Diagram is also a new artifact in UML 2.0.

Message

A Message is a NamedElement that defines one specific kind of communication in an Interaction. A communication can be e.g. raising a signal, invoking an Operation, creating or destroying an Instance. The Message specifies not only the kind of communication given by the dispatching ExecutionSpecification, but also the sender and the receiver.(OMG Unified Modeling Lanauge Specification - UML 2.0 Superstructure Specification, p. 538)

State or condition timeline

A StateInvariant is a runtime constraint on the participants of the interaction. It may be used to specify a variety of different kinds of constraints, such as values of attributes or variables, internal or external states, and so on.(OMG Unified Modeling Lanauge Specification - UML 2.0 Superstructure Specification, p. 550)

General value lifeline

Shows the value of the connectable element as a function of time. Value is explicitly denoted as text. Crossing reflects the event where the value changed.(OMG Unified Modeling Lanauge Specification - UML 2.0 Superstructure Specification, p. 567)

Lifeline

A lifeline represents an individual participant in the Interaction. While Parts and StructuralFeatures may have multiplicity greater than 1, Lifelines represent only one interacting entity.(OMG Unified Modeling Lanauge Specification - UML 2.0 Superstructure Specification, p. 536)

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