As of 4D v17 R5, 4D for iOS supports N to One relations so you can use descriptive relation names and simplify defining your project structure. You can visualize all of your table relations directly in the Structure section of the Project Editor.
Easy to use :
1. Click on a table’s relation. In the image below, the Category table relation is shown underlined. Clicking on it will display the fields available via this relation.
2. Select the fields you want to publish.
And that’s it! The fields you’ve just published can be used like any others.
Now you’re able to change a related fields’ short and long names, choose its icon, and even apply queries on it.
Here’s an example to check it out. Enjoy!