# 数据库

- [数据库原理](/java/shu-ju-ku-37/shu-ju-ku-yuan-li.md)
- [为什么 OLAP 需要列式存储](/java/shu-ju-ku-37/shu-ju-ku-yuan-li/wei-shi-mo-olap-xu-yao-lie-shi-cun-chu.md)