Advices on server implementation for server/client structure iOS App development?

Question

There are must be a lot of apps that are designed to communicate with server. My question is only about App installed on iOS device + Server side service interaction. Web app is

Answer 1

Are you sure you want to spend time & money to develop your own Server & develop your own API? There are lots of mBaaS (mobile Backend as a Service) providers today such QuickBlox, Parse,StackMob, which are ready to use and they have great Custom Objects API and some of predefined modules. They have great free plans with big quota. Some of them such QuickBlox has Enterprise plan - so you can buy license and they server team update server for you purpose.

So, i recommend not develop your server and think about mBaaS market.

Just about your issue - I can recommend look at QuickBlox Custom Objects code sample and also Custom Objects API. Custom Objects module provides flexibility to define any data structure(schema) you need. Schema is defined in Administration Panel. The schema is called Class and contains field names and their type. I think it's what you need.