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Topic Title: Are derived attributes implemented in Rhapsody?
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Created On: 27-Oct-2006 08:32
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 27-Oct-2006 08:32
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Charlie Lane

Posts: 86
Joined: 16-Sep-2005

UML 2.0 states (from 05-07-04 page 14):

[QUOTE]If an attribute is derived, where possible, the definition will also include a specification (usually expressed as an OCL
constraint) specifying how that attribute is derived. For instance:
[INDENT]?/isComposite : Boolean A state with isComposite = true is said to be a composite state. A composite state is a state that contains at least one region>
[INDENT]isComposite = (region > 1)[/INDENT][/INDENT][/QUOTE]
And Rhapsody's User Manual Glossary states (from 7.0 MR1 user manual page 1052):

[QUOTE]derived attribute
[INDENT]An attribute computed from other attributes.[/INDENT][/QUOTE]
But I cannot see how to insert a derived attribute in a class. I could of course make a small operation, but that's cheating! Any ideas how to add a derived attribute?
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