I have two feature classes which have common Valve ID #s. One table has multiple service connections with a unique number. I need to select all services linked to each valve and collect the individual service # then update the service fields (1-4) in the Valve class with each connection #. I believe I can do it with an updateCursor but I'm not a strong coder. Any help is appreciated.
This should get you started. You'll have to give more info on how you want the fields updated to add to the algorithm.