I have an existing feature class that show on the map. The feature class is base on the table. I create another view to add additional info for the feature class. How can I update the existing feature class to use the new view for the data???
You cant change the schema of an existing feature class by replacing the underlying table with a view of the same name that has different fields..
The schema info is also held within GDB_ tables that cannot be edited directly.
What you may need to do instead is register the view with the geodatabase as a separate feature class.
Register a table or view with the geodatabase—ArcGIS Pro | Documentation
Register a table or view with the geodatabase—ArcMap | Documentation (arcgis.com)