[🗄️DataBase] ACID - Consistency
目錄 ACID 簡單介紹 Consistency 是什麼 Consistency 的兩個層面:資料庫/應用層 如何達到 Consistency 總結 想像你要從 A 銀行轉帳 $100 到 B 銀行: A 帳戶:-$100 B 帳戶:+$100 如果轉帳到一半伺服器當機,會發生什麼事? 如果只扣了 A 沒加 B → A 少了 $100,B 沒收到 → 錢消失 如果扣了 A 也加了 B → 正常,但當機沒影響 如果兩邊都扣了 → 明顯不對 ACID 就是用來保證這種操作不會出錯的四個規則: A = Atomicity(原子性):全部成功或全部失敗,沒有「只做一半」 C = Consistency
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