DataModel xs vodm This schema defines a type for registering data models written in the VO-DML modelling language. a VO-DML-based data model. In addition to usual resource metadata, this defines the prefix and the URI at which to retrieve the formal data model definition. DataModels should have IsSupplementTo relationships to their definining standard. a description of a capability in connection with the data model. This could include validators, online converters, or similar facilities. the prefix clamined by the datamodel, including a training colon. Each data model can only claim one prefix. Before claiming a prefix, a search in the VO Registry must ascertain that the prefix is not claimed by another data model. The URI of the VO-DML definition of the data model. This URI should be constant by major version of the standard; see the VO-DML REC for deployment advice.