The 'code' field from 'items table is the primary key. I would like to create a relationship between 'TCode' from 'Items and 'Tcode' from 'traders table. But when I enforce integrity, it says no unique index found. The 'Tcode from Items Table is indexed to Yes(no duplicates) while Tcode from Traders is indexed Yes(no duplicates). It still shows error pls help
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