Re: They do respect set theory! (and violate 3NF)

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| Supplier_Product |
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| S1      | P1     |
| S1      | P2     |
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| City  | Country |
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| Paris | France  |
| Paris | USA     |
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| ID | City  | Country |
+----+-------+---------+
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| 02 | Paris | France  |
| 03 | Paris | USA     |
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