核心数据 - 许多关联 - 有套装问题

I have look around for something similar with no luck so I am going to try and explain my trouble and paste some code. I have an application that uses Core Data and I can save and retrieve data from their respective textFields with the exception of my (to many relationships). I believe these are saved and returned as sets when fetched. I have read up on NSSet and looked at some code but with still do not understand how to code it.I have look around for something similar with n