I have a project where I need to classify ZIP codes to 4 levels of nested groups (similar to nested hydrologic units). Rather than download a database of ZIP codes, add my classification, and upload them to ArcGIS Online, it would be great to join my table to an existing ESRI hosted dataset that is already uploaded and optimized for rendering online. In other words, I would like to link my table to and existing dataset already published.
I don't think this is already possible, but would love to hear otherwise or add this to a my dream list of functionality.
Thanks,
Lance
