CREATE TABLE `autos` (
  `ID` double NOT NULL,
  `Marca` varchar(40) DEFAULT NULL,
  `MarcaID` int(10) NOT NULL,
  `Modelo` varchar(40) DEFAULT NULL,
  `ModeloID` int(10) NOT NULL,
    PRIMARY KEY (`ID`),
  UNIQUE KEY `ID_UNIQUE` (`ID`)
) 

CREATE TABLE `au1` (
  `MarcaId` int(5) NOT NULL,
  `Marca` varchar(20) DEFAULT NULL,
  `ModeloId` int(5) NOT NULL,
  `Modelo` varchar(20) DEFAULT NULL,
    PRIMARY KEY (`MarcaId`,`ModeloId`)
)