TDWG Grand Unified Model graph diagram

[baskaufs]

The screenshots below were taken from this presentation by John Wieczorek.

For additional information, see the intro to the model document (includes the ER diagram) and case studies.

[baskaufs]

This graph model was constructed directly from the main ER diagram above using the following rules:

1. When classes had a many-to-one relationship, an object property was used to link from the many side to the one.
2. When classes had a many-to-many relationship mediated by a join table, two inverse object properties were used to link the classes.
3. The join tables themselves were not considered classes.

When a class in the model seemed to correspond to an existing Darwin Core class, the class CURIE was shown in red. Classes whose names are in black don't currently exist in Darwin Core, although they might in some other vocabulary. Only one of the object properties (labeled in red) currently exists.