AikoMikan
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  • 22-09-2021
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主キーの2つの特徴は何ですか?

Answer only if you know! ​

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ᴜᴋɪʏᴏ
ᴜᴋɪʏᴏ ᴜᴋɪʏᴏ
  • 22-09-2021

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

  • 主キーの2つの特徴は何ですか?

[tex] \huge \boxed{\mathfrak{Answer} \downarrow}[/tex]

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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