Which of the following types of tables constraints will prevent the entry of duplicate rows? Options: A . &nbspPrimary key B . &nbspUnique C . &nbspNull D . &nbspForeign key E . &nbspNone of these

Which of the following types of tables constraints will prevent the entry of dup

Question

Which of the following types of tables constraints will prevent the entry of duplicate rows?

Answer: Option B

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