I'm trying to obtain an updated copy of the ArcGIS CASE Tools to update a Geodatabase schema.
The latest download available seems to be for ArcGIS 10.3.1 and refuses to install alongside ArcGIS 10.5.1.
Is there an update available to use with Visio 2013 and ArcGIS 10.5+, or have these tools gone the same way as the geodatabase diagrammer?
Please review this help topic on using UML to design geodatabase schema,
A note about the use of UML for geodatabase design—ArcGIS Help | ArcGIS Desktop
Hope this helps,