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UML Diagrams
Zicomi Systems publishes some UML example diagrams online from the world famous UML dictionary.
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Version 2.5 Released
Zicomi Systems is delighted to announce that version 2.5 of Zicomi Mentor is released. With support for UML 2.0 and all thirteen UML diagrams
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Zicomi Systems' Director
speaks about the UML at Objects by Design - an informative interview
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Partner Programme
Zicom Systems is delighted to announce a new world wide partner programme, become a partner today.
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OMG Member
Zicom Systems is made a member of the OMG!
UML Element Description
Lifeline
Lifeline    
A lifeline (structural) is a visual synonym of a lifeline. It adds no additional semantics; it is simply an alternative presentation of the lifeline element adapted for use on a communication diagram. In this form of the lifeline the instance is represented by the shape of the classifier, which may be a class, component, actor, use case or any other classifier. The lifeline does not have a dashed line like a sequence diagram, as time is not represented by any axis on a communication diagram. There is no standard form of this element as it has different presentations in the three different types of interaction diagrams and has two different presentations on a timing diagram.
Message Synchronous
Message Synchronous    
A synchronous message is a visual synonym of a synchronous message. It adds no additional semantics; it is simply an example of the synchronous message adapted for use on a communication diagram. This usage of the synchronous message has the same form as a synchronous message used on other interaction diagrams: a solid line with a solid arrowhead directed from one lifeline to another (possibly reflexive). It has a different appearance from other forms of the synchronous message as it uses a Dewey decimal system (x.y.z) of message sequence labels that indicate the time ordering of messages. There is a single form of presentation in the three different types of interaction diagrams and the two different presentations of the timing diagram.
Asynchronous Message
Asynchronous Message    
An asynchronous message is a visual synonym of an asynchronous message. It adds no additional semantics; it is simply an example of the asynchronous message adapted for use on a communication diagram. This usage of the asynchronous message has the same form as an asynchronous message used on other interaction diagrams: a solid line with an open arrowhead directed from one lifeline to another (possibly reflexive). It is rarely used on a communication diagram as it does little to clarify the sequencing of messages. There is a single form of presentation in the three different types of interaction diagrams and the two different presentations of the timing diagram.
Comment (Note)
Comment (Note)    
A comment can contain textual information or graphical symbols that add additional information to a diagram or model. The information can take many forms from very formal, in the case of constraints, to conversational, in the case of working notes. Comments can be placed anywhere in a model or diagram, and simply by their proximity and alignment; they can be applicable to one or more elements. They may also be attached either to one or more elements by a comment attaching line.
Comment (Note) Attaching Line
Comment (Note) Attaching Line    
A comment attaching line is a dashed line that is used to attach a comment (note) to a model element in a diagram. The comment (note) attaching line is not a UML relationship and has no semantics beyond signifying that the contents of a comment apply to the model element it is attached to. A comment may be attached to any number of model elements or may exist in isolation and by placement in proximity to one or more model elements signify that it applies to those elements.
Unified Modeling Language and UML are either registered

trademarks or trademarks of Object Management Group, Inc. in the

United States and/or other countries.