数据库引擎区别的相关内容

阿里云文档 2025-10-21

PSL4和PSL5两种存储类型有什么区别,如何使用

PSL4和PSL5是PolarDB为不同业务场景所提供的存储类型，两者在价格、数据可靠性及性能方面均存在部分差异。本文为您介绍这两种存储类型的区别，帮助您决策如何选择。

阿里云文档 2025-04-28

RDS倚天版和标准版的区别

为了进一步降低用户成本，云数据库RDS推出倚天版实例和标准版实例，ARM实例已被纳入倚天版实例。

阿里云文档 2025-02-20

逻辑备份、物理备份与快照的区别

本文介绍逻辑备份、物理备份与快照的区别，以及使用数据灾备控制台创建备份计划时如何选择备份方式。

阿里云文档 2024-02-06

云数据库RDS MariaDB存储类型的区别及选购建议

云数据库RDS MariaDB提供了ESSD云盘、SSD云盘两种存储类型，本文介绍这两种存储类型的基本信息及选购建议。

阿里云文档 2023-09-03

触发器和规则系统规则vs触发器有哪些区别？_云原生数据库PolarDB PostgreSQL版（兼容Oracle）_云原生数据库 PolarDB(PolarDB)

许多触发器可以干的事情同样也可以用PostgreSQL规则系统来实现。目前不能用规则来实现的东西之一是某些约束，特别是外键。可以放置一个合格的规则在一列上，这个规则在列的值没有出现在另一个表中时把命令重写成NOTHING。但是这样做数据就会被不声不响地丢弃，因此也不是一个好主意。如果要求检查值的有效性，并且在出现无效值的情况下应该生成一个错误消息，这种需求就必须要用触发器来完成。

问答 2021-12-06 来自：开发者社区

MySQL数据库引擎MyISAM和InnoDB的区别介绍

　　InnoDB存储它的表＆索引在一个表空间中，表空间可以包含数个文件。InnoDB表可以是任何尺寸，即使在文件尺寸被限制为2GB的操作系统上。InnoDB也默认被包括在所有MySQL 5.1二进制分发版里。

文章 2012-07-17 来自：开发者社区

mysql 数据库引擎 MyISAM InnoDB 大比拼区别

先给上自己的民间说法，官方英文说法还在翻译解读中，稍后跟上 Mysql 数据库中，最常用的两种引擎是innordb和myisam。Innordb的功能要比myiasm强大很多，但是innordb的性能要比myisam差很多，如果你的网站只是做简单的查询，更新，删除，那么用myiasm是最好的选择。测试方法：连续提交10个query，表记录总数：38万，时间单位 s 引擎类型&...

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