<id name="Empno" type="string">
            <column name="EMPNO" length="6"/>
        </id>
        <property name="firstname" type="string">
            <column name="FIRSTNME" length="12"/>
        </property>
        <property name="lastname" type="string">
            <column name="LASTNAME" length="15"/>
        </property>
        <property name="salary" type="double">
            <column name="SALARY" length="9"/>
        </property>
        <property name="gender" type="char">
            <column name="SEX" length="1"/>
        </property>
        <property name="workdept" type="string">
            <column name="workdept" length="12"/>
        </property>