polardb-x数据库外键的相关内容

阿里云文档 2025-09-19

PolarDB-X企业版创建TTL表

本文通过介绍TTL表的定义、创建、调整、删除，帮助您快速了解TTL表的基础操作。

阿里云文档 2025-09-19

PolarDB-X企业版冷数据归档最佳实践

本文为您介绍冷数据归档如何选择适合的归档方案以及案例分享。

阿里云文档 2025-07-24

PolarDB-X企业版冷数据清理

本文为您介绍TTL表冷数据清理算法以及如何管理清理任务。

阿里云文档 2025-07-10

PolarDB-X企业版创建归档表

为表添加TTL定义后，如需高压缩、低成本的存储TTL的所有数据（基于列存索引，存储在远端对象存储（OSS）），您可以为TTL表创建对应的归档表。

问答 2024-01-24 来自：开发者社区

PolarDB-X中，原来数据库dump中的有外键的表怎么处理？

文章 2023-10-19 来自：开发者社区

本文作者：琦华本文来源：PolarDB-X 知乎号更多技术干货，欢迎关注！写在前面外键是关系型数据库中非常便利的一种功能，它通过一个或多个列为两张表建立连接，从而允许跨表交叉引用相关数据。外键通过约束来保持数据的一致性，通过级联来同步数据在多表间的更新和删除。在关系数据库系统中，大多数表都遵循外键的概念。因此使用外键可以在一定程度上减轻业务代码中对数据一致性判断的工作量。虽然外键的功能很便利....

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更新时间 2024-07-20 15:34:35

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