[事务](%E4%BA%8B%E5%8A%A1.md) [视图](%E8%A7%86%E5%9B%BE.md) [insert /update/delete](insert-update-delete.md) [create/drop/alter](create-drop-alter.md) [数据库锁](%E6%95%B0%E6%8D%AE%E5%BA%93%E9%94%81.md) [数据库索引](%E6%95%B0%E6%8D%AE%E5%BA%93%E7%B4%A2%E5%BC%95.md) [select](select.md) [join 连接](join%E8%BF%9E%E6%8E%A5.md) [子查询和联合查询](%E5%AD%90%E6%9F%A5%E8%AF%A2%E5%92%8C%E8%81%94%E5%90%88%E6%9F%A5%E8%AF%A2.md) [范式](%E8%8C%83%E5%BC%8F.md) [触发器-存储过程](%E8%A7%A6%E5%8F%91%E5%99%A8-%E5%AD%98%E5%82%A8%E8%BF%87%E7%A8%8B.md) [高并发环境](%E9%AB%98%E5%B9%B6%E5%8F%91%E7%8E%AF%E5%A2%83.md) [优化-数据库](%E4%BC%98%E5%8C%96-%E6%95%B0%E6%8D%AE%E5%BA%93.md) [主键 超键 候选键 外键](%E4%B8%BB%E9%94%AE%E8%B6%85%E9%94%AE%E5%80%99%E9%80%89%E9%94%AE%E5%A4%96%E9%94%AE.md) [数据库总结](%E6%95%B0%E6%8D%AE%E5%BA%93%E6%80%BB%E7%BB%93.md)