...loyeeID)员工编码9ShipperIDInt4外键, 参照Shippers(ShipperID)运输公司编码 4.3 数据库表的设计(10) OrderItems(订单明细) 表序号列名类型长度完整性约束与规则描述1OrderIDInt4组合主键, 外键, 参照Orders(OrderID)订单编号2ProductIDInt4组合主键,...
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The object model has an Address class that has no corresponding table in the database, and the database has an OrderItems table that has no corresponding class.
数据库中有OrderItems表,但是对象模型中并没有与之对应的持久化的类。
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