Hello @William_Lee
If I understood the essence of your question correctly, then the best way to import tables with relations using MS Access is to create test data, for example:
- Create a Parent table
- Create table Child
- Add a one-to-many relationship from Parent to Child
- Add multiple objects
- Make export - Console - Manage - Export
- Download export zip
- View the structure of csv files that are in the export zip file.
- Fill these files with your data or create your own csv files by analogy.
- Pack new csv files into zip
- Make an import.
Perhaps you want to achieve something else, correct me, and I will be happy to help you.