how do I use items SQlite?

How do I use the data saved in SQlite?

my code:

 - (void)viewDidLoad {
      [super viewDidLoad]; // Inicializa a propriedadae dbManager
      self.dbManager = [[DBManager alloc] initWithDatabaseFilename:@"radio.sqlite"];
 } 
 -(void)getInfo{
      NSString * selectQuery = @"SELECT * FROM notificacao WHERE id != 0";
      [self.dbManager executeQuery:selectQuery];
 }

I must use all the data to back this query but not managed to do that. Could someone help me?