I was searching a lot of time for some library to do that I want. I found this library:
https://github.com/martinrybak/SQLClient
Main blog of the proyect:
http://objcsharp.wordpress.com/2013/10/15/an-open-source-sql-server-library-for-ios/
If you know another Libraries you can post in this thread for help the people with the same problem.
Regards.