mybatis mapper xml文件配置resultmap时，id行和result行有什么区别？

<resultMap id = "CashInvoiceMap" type="com.dfire.soa.invoice.bo.Invoice">
    <id column="id" property="id" />
    <result column="order_id" property="orderId" />
    <result column="customer_register_id" property="customerRegisterId" />
    <result column="entity_id" property="entityId" />
    <result column="invoice_kind" property="invoiceKind" />

</resultMap>

property：javabean的属性名，propertyjavabean的属性名。

column:数据库的字段名，column:数据库的字段名。