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Platinumixq2015-03-01 19:24:09
MySQL
Platinumixq, 2015-03-01 19:24:09

In what normal form is it required that the identifier be not just a surrogate, but have its own value?

In what normal form of relationship properties in a relational data model is it required that a unique identifier (a primary key that just usually sorts data technically and does not carry logical meaning) is not just a surrogate, but has its own value?

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Dmitry Entelis, 2015-03-01
@DmitriyEntelis

Maybe I'm wrong, but this is not written anywhere in normal forms.
Simply surrogate is more convenient and works faster imho.

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