In UML the controlled lists, discussed in Section [Controlled List] are represented as uml:Enumeration. They are transformed into instances of a SKOS model [skos-spec].

Description:

Each uml:Enumeration element is transformed into skos:ConceptScheme, and each enumeration item, if present as an uml:Attribute value, is transformed into a skos:Concept. An enumeration might be empty, especially when they refer to externally specified controlled lists.

In a uml:Enumeration element, the name shall be interpreted as the controlled list name; it must be a normalised string. Each attribute name is used as a local segment in the generation of the concept URI. The attribute type is ignored and by default is considered to be skos:Concept. The attribute alias is transformed into the `skos:Concept`s preferred label. The attribute initial value is transformed into the alternative label of the concept.

In case no attribute alias is specified then the attribute name is used as preferred label of the skos:Concept. This happens as skos:prefLabel is a mandatory property in the SKOS model.

It is possible to employ the enumerations for class properties by drawing a dependency (uml:Dependency) relation from the class to the enumeration and provide a relation target role. However, the enumeration should not connect to other elements.