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- 21:34, 19 May 2022 Planetoid talk contribs created page Can phone number be used as a primary key in a database (Created page with "可以使用手機號碼或者是電話號碼，當作資料表的主鍵 (primary key) 嗎？ == 問題 == <pre> 透過識別碼可以串聯不同資料，那麼可以將客...")