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docs/notes/数据库系统原理.md
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@ -145,10 +145,7 @@ MySQL 中提供了两种封锁粒度：行级锁以及表级锁。
锁的兼容关系如下：
| - | X | S |
| :--: | :--: | :--: |
| **X** |×|×|
| **S** |×|√|
<div align="center"> <img src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/image-20191207213523777.png"/> </div><br>
### 2. 意向锁

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5
notes/数据库系统原理.md
View File

@ -145,10 +145,7 @@ MySQL 中提供了两种封锁粒度：行级锁以及表级锁。
锁的兼容关系如下：
| - | X | S |
| :--: | :--: | :--: |
| **X** |×|×|
| **S** |×|√|
<div align="center"> <img src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/image-20191207213523777.png"/> </div><br>
### 2. 意向锁