There is no such thing as a "universal, one-size-fits-all" key. Just as no two sets of entities are the same, the attributes that make them unique have to be found in the reality of the data. I ...
A foreign key is a column or columns of data in one table that refers to the unique data values -- often the primary key data -- in another table. Foreign keys link together two or more tables in a ...
It's good to be back writing for Intelligent Enterprise after a long break. I was writing for Intelligent Enterprise before it was Intelligent Enterprise. Let me explain. In the early '90s, I had a ...
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