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Commit 101e1a8

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Merge pull request Snailclimb#463 from fpGHwd/patch-1
修改多音字
2 parents bdacabb + 80b40be commit 101e1a8

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‎docs/database/一千行MySQL命令.md‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -363,7 +363,7 @@ set(val1, val2, val3...)
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字段不能再分,就满足第一范式。
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-- 2NF, 第二范式
365365
满足第一范式的前提下,不能出现部分依赖。
366-
消除符合主键就可以避免部分依赖。增加单列关键字。
366+
消除复合主键就可以避免部分依赖。增加单列关键字。
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-- 3NF, 第三范式
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满足第二范式的前提下,不能出现传递依赖。
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某个字段依赖于主键,而有其他字段依赖于该字段。这就是传递依赖。

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AltStyle によって変換されたページ (->オリジナル) /