Write an iPhone application -- 2

I am Creating a IPhone application but I need support in writing few functions. Those Functions are very basic and they are Function 1: Get Device Id (Directly from device), Get Name (From User) a. After getting name, Navigate to next screen Function 2: Two fields - FieldA and Field B. Field B is always a child object of Field A a. Need 2 Buttons to Add Field A and Field B b. Once Field A and Field B is Entered. On Clicking Submit button, Field A & B should be added along with Device Id, Name to the Db Function 3: Based on Device ID, All Field A and B's related to the Device Id should be Queried from DB and should be displayed. a. User should be able to Edit and Delete the Field A and Field B values b. Field A and Field B should be displayed like a Tree or List View