- https://purl.semanticip.org/linked-data/sdmx/ML/validFrom
TTL - owl:DatatypeProperty
- validFrom
- localElement
The validFrom attribute indicates the point in time in which the hierarchical code became effective. This can be used to track the historicity of codes changing over time.
- SDMXStructureHierarchicalCodelist.xsd
<xs:attribute name="validFrom" type="xs:dateTime" use="optional">...</xs:attribute>