问题描述
我有一个数据库，其中有一个用于活动订单的表和一个用于非活动订单的表。我想在Entity Framework中将此模型建模为一个称为Orders的实体。我还需要一种方法来确定此集合中的订单是否处于活动状态，最好是通过在实体上具有根据其所在表设置的status属性。总之可以使用Entity Framework 1来执行此操作。
I have a database with a table for active orders and one for inactive orders. I would like to model this in Entity Framework as one entity called Orders. I also need a way to determine if an order in this collection is active or not, preferably by having a status property on the entity that is set according to what table it is in. Is there anyway to do this using Entity Framework 1. What about in Entity Framework 4?
推荐答案
看看每个具体类型的表继承。
。
Take a look at the Table Per Concrete Type inheritance.
It is described here in ADO.NET Team Blog.
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