"Oracle Database Programming Guide" 23: Data Dictionary Views

Data dictionary views can be divided into three categories:

• dba - all programs included in the object information
  for all users.
• all - the user can access the object information
  I have access to, including all of its own, and other users.
• user - the user object information program
  myself all.

/*
作者：AT阿宝哥
日期：2016年9月18日
愿景：参考官方资料，做最好的课程，成就更多职业人！
邮箱：[email protected]
CSDN：https://blog.csdn.net/goldentec
简书：https://www.jianshu.com/u/8a6075d7a2e0
说明：

注意：
    
*/
-------------------------------------------------------------------------------
--Sample1:查询当前用户的

--查询当前用户拥有的表和视图
SELECT *