Version: (using KDE KDE 3.5.1) Installed from: Ubuntu Packages OS: Linux The UML spec (and many other UML tools, e.g. argoUML) allow attributes to have a multiplicity (other than 1..1) specified. Although not supported in all targets (e.g. can't be easily implemented in C++), attribute multiplicities are supported in some targets (e.g. XML Schema: element multiplicity) and should be supported in Umbrello.
multiplicities for attributes shown as e.g. + street [0..1] : CharacterString
This remains an issue over 3 years later, as of version 2.2.90 (from kubuntu's KDE 4.3 beta2 packages).
And, believe it or not, it is still an issue in 2020! Together with multiplicity and the In/InOut/Out type for parameters, there would be almost no need to define special types for pointers and references (in C++, at least): For multiplicity of 1: IN Parameters, if they are datatypes, would be passed by value; INOUT and OUT parameters by non-const reference; IN parameters of class type passed by const reference. For multiplicity of 0..*: IN parameters should be passed as pointer to const type; INOUT and OUT parameters as pointer to non-const type. However, there is quite often the need to model things like char** which would probably need additional constraint extensions if actual pointers as datatypes are added to the existing primitive types.
(In reply to Robert Hairgrove from comment #3) > And, believe it or not, it is still an issue in 2020! According to https://umbrello.kde.org/openbugs.php there are about 300 bugs open, and it was already hard work to bring the code into the current form; so any help is welcome :-)