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densk [106]
3 years ago
14

主キーの2つの特徴は何ですか?Answer only if you know! ​

World Languages
1 answer:
Soloha48 [4]3 years ago
4 0

\huge \boxed{\mathfrak{Question} \downarrow}

  • 主キーの2つの特徴は何ですか?

\huge \boxed{\mathfrak{Answer} \downarrow}

主キーの2つの特徴は次のとおりです :-

  1. それはユニークでなければなりません。
  2. NULL値であってはなりません。

__________________

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