我以dba身份登录,执行如下命令:
select username from all_users 和select username from dba_users;请问all_users和 dba_users这两个数据字典有什么区别？谢谢！ select username from all_u
select username from all_users 和select username from dba_users;请问all_users和 dba_users这两个数据字典有什么区别？谢谢！ select username from all_u
