# 数据库

- [MySQL](/java/shu-ju-ku-7/mysql.md)
- [MySQL出现Waiting for table metadata lock的原因以及解决方法](/java/shu-ju-ku-7/mysql/mysql-chu-xian-waiting-for-table-metadata-lock-de-yuan-yin-yi-ji-jie-jue-fang-fa.md)