OCP-1Z0-052-V8 02-128题

分享一下我老师大神的人工智能教程!零基础,通俗易懂!http://blog.csdn.net/jiangjunshow

也欢迎大家转载本篇文章。分享知识,造福人民,实现我们中华民族伟大复兴!

               

128. Note the points about data dictionary views and dynamic performance views:

1) These are stored in the SYSTEM tablespace.

2) These are the based on the virtual tables.

3) These are owned by the SYS user.

4) These can be queried by a normal user only if O7_DICTIONARY_ACCESSIBILTY parameter is set to

TRUE.

5) The V$FIXED_TABLE view can be queried to list the names of these views.

扫描二维码关注公众号,回复: 4102205 查看本文章

Which statements listed describe the data dictionary views?

A.1 and 3

B.2, 3, and 5

C.1, 2, and 3

D.2, 3, 4, and 5

Answer: A  

答案解析:

参考:http://blog.csdn.net/rlhua/article/details/12710613

1,3.他们都被存在system表空间以及owned是sys用户。

2.动态性能视图以基于数据库服务器内部的内存结构构建的虚拟表为基础。

4.启用数据字典保护使用 O7_DICTIONARY_ACCESSIBILTY参数设置为false,则阻止普通用户访问数据字典。

5.V$FIXED_TABLE只能查询动能性能视图所有的名称。

           

给我老师的人工智能教程打call!http://blog.csdn.net/jiangjunshow

这里写图片描述

猜你喜欢

转载自blog.csdn.net/sdfsdkk/article/details/84076709