Configuration data is stored oracle
Database orcl
----- orcl database instance default when you install the database, it has been added.
------ 表空间 (oracle数据库会有很多默认表空间)
------ 用户 (用户是创建在表空间上的,创建用户不选择表空间,就会创建在默认表空间Users上,当然可以新建的表空间上再创建用户)
------- 表 表属于用户(sql再导入和导出时,用户要与表一一对应)
Storing data structure mysql
------- users (all are operating authority based on the highest authority user, different users have different databases)
--------- 数据库
--------- 表(表属于数据库)