Thank you for your replys. The Relationship is not really the issue. The layers/tables and Relationship are all stored together in the Oracle Database and I can see the data there, in ArcMap, and in AGOL with no problem. I don't believe I have permissions to do a Collaboration in AGOL.
I probably should reword my question: I would like to know how do I automatically see the updated data in the map service/AGOL without having to manually republish and overwrite the service every time the Oracle Data Table has been updated?
Thanks!