In many cases including the reference archetypes, classification requires the specification of resource meta-data defining
the resource class' type and structure.
Like before, a reference meta-data definition schema is required and should be specified with mappings to support different
“local” meta-data schema.
While standard meta-data definition schema are already available (e.g. XML Schema), and since resource meta-data information
should also be managed resources to support extensive meta-data management and modeling, the meta-data reference schema should
be structured somewhat along the lines of the DNAOS meta-data model, as resources with a predefined archetype and meta-data,
as well as adequate entitlement.