引用组合主键作为外键

ms sql一个表中，引用另外一张表的组合主键作为外键：

ALTER TABLE [dbo].[Quotation]
   ADD CONSTRAINT [FK__Quotation__0000000000000003]
   FOREIGN KEY([C_N],[C_S])
   REFERENCES [dbo].[Customer]([Customer_Number],[Customer_Sequence])      

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