V2.1 of the DATEX II platform independent model.
This can be viewed or managed by the Enterprise Architect Tool that can be downloaded here
In addition a browsable version of the model is also provided.
The top level entry point into the model is reached via the path "Logical:D2LogicalModel" which contains all publications, management information and exchange protocol meta-data for a DATEX II interface. Although the UML model includes other parts (Analysis, Dynamic and Functional), these are included as supporting information only and are referred to in other parts of the DATEX II reference set of documents (please see the specific specification on the Exchange Platform Specific Model).
Static Model Browsing is accessible here and the zipped HTML model is attached