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Asked: 2026-05-26T15:50:44+00:00

I am trying to figure out how to use Core Data with relationships. I

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I am trying to figure out how to use Core Data with relationships. I have used Core Data before, but only the very basics sans relationships (which worked for my needs at the time).

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I have a Trip entity that can have many Nodes. When the user presses a “Start” button, I want to initialize the Trip entity and start storing all of the Nodes inside of that Trip, and then when the user presses a “Stop” button, I want it to calculate all of the Trip attributes and store it all together. How do I save with respect to these entities?

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1 Answer

  1. Editorial Team

    Generate the MO subclasses using the IDE, it will create methods for setting the nodesInTrip and tripsInNode relationships.

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