Hello: I have a geodatabase that contains three datasets. Two tables and a polygon layer. The GIS layer contains a one to many relationship to a central table, followed by that table having a many to one to the last table. Manually, everything works great. But I want to automate the selections through their related tables by setting up queries in model builder. Is there a tool/process/script that automates the selection of related tables when records are selected in one of the participating tables? The only way I know to select the subsequent tables is by the related tables button at the top of the attribute tables window. Any help is GREATLY appreciated. In good health.