Hi, i need to initiate the app with a lot of storage (ONLY OFFLINE). 
 Example: 
 County 1 - City 1 - User 1 
 County 1 - City 1 - User 2 
 County 1 - City 1 - User 3 
 ... 
 County 1 - City 2 - User 1 
 County 1 - City 2 - User 2 
 County 1 - City 2 - User 3 
 ... 
 County 2 - City 1 - User 1 
 County 2 - City 1 - User 2 
 County 2 - City 1 - User 3 
 ... 
 County 2 - City 2 - User 1 
 County 2 - City 2 - User 2 
 County 2 - City 2 - User 3 
 ... 
 more than 10.000 registers
and the app will access those records during the user uses.
Do i have to use json?? SQLite?? 
 Some example?