SQLite and Portuguese-br characters

I'm developing an app that requires the storage of Portuguese characters. I was wondering if I need to do any configuration to prepare my SQLite db to store those considered special characters. When I query a db table that contains those charac开发者_如何学Cters I get a '?' (without quotes) in their place.

Probably an encoding problem. Is your DB/client using UTF-8? you should check your DB encoding with PRAGMA encoding;, be sure your client does it's job using the same encoding and verify that the encoding used handles well those Portuguese chars.