Selasa, 12 Juli 2016

[MS_AccessPros] Relationship Definition


I have 2 tables:

Product Class


The Product table has a field Product Class that relates to the Product Class table. This field in the Product table is optional.

 I am trying to define a Relationship with 'referential integrity' between the Product Class and the Product table, but because I have records in the Product table that dont have the Class filled in, I am getting a message 'Product violates referential integrity'. Is there any way around this?. I have tried all Join Types but I am getting the same message on all of them. 

Thanks for your answers.



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