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Space Link Extension - Service Management - CCSDS

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DRAFT RECOMMENDED STANDARD FOR SPACE LINK EXTENSION SERVICE MANAGEMENT<br />

ANNEX E<br />

OVERVIEW OF UNIFIED MODELING LANGUAGE (UML)<br />

DIAGRAMMING CONVENTIONS<br />

(INFORMATIVE)<br />

This annex provides an overview of the Unified Modeling Language (UML) Version 2.0<br />

specification of the Object <strong>Management</strong> Group (OMG) diagramming notation, semantics,<br />

and conventions that are used in this Recommended Standard for the class diagrams,<br />

sequence diagrams, activity diagrams, and state machine diagrams contained herein.<br />

D1<br />

CLASS DIAGRAM<br />

D1.1 GENERAL<br />

A UML class diagram describes the structure of a message; its parts; and how those parts<br />

interrelate. A UML class, represented in the diagram as a box, represents a data set. Class<br />

diagram conventions include composition, generalization, multiplicity and constraints.<br />

Enumeration notation is also used but only when it is involved in a composition constraint.<br />

D1.2 CLASS DIAGRAM EXAMPLE<br />

Figure E-1 demonstrates the UML conventions that are used in the class diagrams.<br />

<strong>CCSDS</strong> 910.11-R-2 Page E-1 March 2008

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