In the data object model approach, you need to first create the wrapper objects to encapsulate the customer and order data, as shown in Listing 1, Listing 2, and Listing 3.
按照数据对象模型方式，首先需要创建包装器对象来封装客户和订单数据，见清单1、清单2和清单3。
In the data object model approach, you need to first create the wrapper objects to encapsulate the customer and order data, as shown in Listing 1, Listing 2, and Listing 3.
按照数据对象模型方式，首先需要创建包装器对象来封装客户和订单数据，见清单1、清单2和清单3。
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