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Daniel K. Schneider: /* Behavioral modeling in the UML architecture */

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Behavioral modeling in the UML architecture

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UML behavioral modeling includes refers to a set of modeling languages

== Behavioral modeling in the UML architecture ==

The UML specification is fairly complex and its organisation is not so easy to understand. Within each UML part, the concepts are grouped into '''clauses''' according to modeling capability and that covers a specific modeling formalism. For instance, all concepts related to the state machine modeling capability are gathered in the '''State Machines''' clause and all concepts related to the activities modeling capability are in the '''Activities clause'''.

Part II - Behavior specifies the dynamic, behavioral constructs (e.g., activities, interactions, state machines) used in various behavioral diagrams:
* [[UML activity diagram]]s
* [[UML use case|UML use case diagram]]s
* State machine diagrams
* Various interaction diagrams, i.e. sequence diagrams, communication diagrams, interaction overview diagram and timin diagram.

== Actions ==

Actions in the UML framework are "lower-level behaviors". The basic concept of activity and all other behavior diagrams are '''actions'''. {{quotation|An action is the fundamental unit of behavior specification. An action may takes a set of inputs and may convert them into a set of outputs. Some of the actions modify the state of the system in which the action executes. The values that are the inputs to an action may be described by value specifications. (See [http://www.omg.org/technology/documents/formal/uml.htm UML, version 2.1.2])}}.

== UML activity metaclasses ==

UML defines activities with activity packages, each of which is modeled with aa [[UML class diagram]]. There several kinds of activity packages. (however, it is not clear to us whether these are really use in practice or whether they just represent a modular way to define languages).
# Fundamental activities: defines activites as nodes that include actions
# Basic activities: adds squencing (without forks/joins and decision)
# Intermediate activities: Supports modeling of activity diagrams. Supports '''activity diagrams''', e.g. includes dataflow, concurrent control and decision.
# Complete activities: adds constraints such as edge weights
# Structured activities: supports structured programming constructs and is compatible with intermediate and complete activities.
# Complete structured activities: Adds support for data flow output pins os sequences, conditions and loops to structured activities.
# Extra structured activities: Adds exception handling to structured activities.

[[Category: Educational modeling languages]]
[[Category: Design methodologies]]
[[Category: UML]]

UML behavioral modeling - Revision history

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