public static ArrayList<Atributos> sqlSelectTodos()
    {
        ArrayList<Atributos> attr = new ArrayList();
        if(!BD.getInstance().sqlSelect("select * from atributos ")){
            return attr;
        }        
        while(BD.getInstance().sqlFetch()){
            attr.add(new Atributos(BD.getInstance().getInt("idatributos")
                                        ,BD.getInstance().getString("atributo")
                                        ,BD.getInstance().getInt("textarea") ));
        }
        return attr;
    }