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remove the FK experiment mark
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Signed-off-by: Yang Keao <[email protected]>
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YangKeao committed Sep 24, 2024
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Expand Up @@ -9,7 +9,6 @@ summary: TiDB 数据库中外键约束的使用概况。

> **警告:**
>
> - 外键功能目前为实验特性,不建议在生产环境中使用。该功能可能会在未事先通知的情况下发生变化或删除。如果发现 bug,请在 GitHub 上提 [issue](https://github.com/pingcap/tidb/issues) 反馈。
> - 外键功能通常用于强制执行[参照完整性](https://zh.wikipedia.org/wiki/%E5%8F%82%E7%85%A7%E5%AE%8C%E6%95%B4%E6%80%A7)约束检查。使用该功能可能会导致性能下降,在将其应用于性能敏感的场景前,建议先进行全面测试。
外键是在子表中定义的,语法如下:
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