Posted by J on 03/08/06 16:52

I have seen some look-up tables have no primary key because there is a null
or " " value in them. Since every table should have a Primary Key, can
anyone educate me how can I handle null or " " value, in the code level? I
am avoiding using Surrogate key.



Thanks,

J



P.S. Null or " " value is "Unknown".

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