A generic core data function to save and commit our changes to DB

gistfile1.m

/*
 * We can fetch a record, modify it and then call this save function to save our changes
 */
- (BOOL)saveToDb{
    NSError *error = nil;
    BOOL returnVal =  ( [[self managedObjectContext] save:&error] );
    if(error != nil)
        NSLog(@"%@", error);
    return returnVal;
}