The current 10.2 release of ArcGIS Diagrammer does not work with ArcGIS Desktop 10.3 and will be the final Diagrammer release according to the link here.
ArcGIS Diagrmmer functionality is needed for ArcGIS Desktop 10.3.
We are using a program called Enterprise Architect from Sparx Systems. A company out of Australia. The license level is a professional edition but single use. I am the only one in our organization that deals with schema changes in our enterprise geodatabases. It works well, but has a bit of a learning curve. For a data dictionary, it has a report writer that works well if you tweak the code a bit. (provides too much info about your data) I still use Visio to diagram the data structure though.
With the loss of XRay for use with ArcGIS Pro and the introduction of some of the new data modeling extensions like Utility Network Extension. The lack of tooling in ArcGIS to at least create/export a reference document of the data model for people outside the GIS/ICT space to validate is quite frustrating.
Esri have done an excelent job in ArcGIS Pro for updateing schema using the Design dialogs and tools, but exporting the information to an HTML document or Visio would be a fanstatic Add-in to have (something like the old ArcGIS Diagrammer)
Enterprise Architect from Sparx Systems is an option, but a little hard to justify the costs (of both licensing and ICT support) just to export the data model to a human readable form.
Please add the geodatabase diagrammer tool (described here) to ArcGIS Pro. We need to be able to create ER diagrams to design and document geodatabase relationships.
It looks like this tool has been discontinued since 2014.
