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derived – Specifies that the usage is derived. Such a feature is typically expected to have a bound value expression that completely determines its value at all times ...

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Webel Best Practice: SysMLv2: Recommend indeed use the optional derived declaration for attributes with derived expression values for better traceability and for clearer display as /derived when feature values are not shown.
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OMG Systems Modeling Language TM (SysML®) Version 2.0 formal/2025-09-03 (Sep 2025)
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About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes
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derived – Specifies that the usage is derived. Such a feature is typically expected to have a bound value expression that completely determines its value at all times ...
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The semantics of binding mean that such a feature value asserts that a feature is equivalent to the result of the value expression.
To highlight this, a feature with such a feature value can be flagged as derived (though this is not required, nor is it required that the value of a derived feature be computed using a feature value ...)
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