1 NF,”Have no duplicate tuplesHave no multi-valued attributesBy definition, a valid relation will conform to 1NFData that do not conform to 1NF (e.g.

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1 NF,”Have no duplicate tuplesHave no multi-valued attributesBy definition, a valid relation will conform to 1NFData that do not conform to 1NF (e.g.

because of multi-valued attributes) are said to be in unnormalized form (UNF).”