【12c OCP认证】2019年度OCP最新考试题库-071.90题

文章来源：更新时间:2019/3/21 14:24:14

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90、Which statements are true? (Choose all that apply.)

A. The data dictionary is created and maintained by the database administrator.

B. The data dictionary views consists of joins of dictionary base tables and user-defined tables.

C. The usernames of all the users including the database administrators are stored in the data dictionary.

D. The USER_CONS_COLUMNS view should be queried to find the names of the columns to which a constraint applies.

E. Both USER_OBJECTS and CAT views provide the same information about all the objects that are owned by the user.

F. Views with the same name but different prefixes, such as DBA, ALL and USER, use the same base tables from the data dictionary.

Correct Answer: CDF

Section: (none)

Explanation(解析：我们看到的数据字典的名字都是基于数据字典基表创建的，所有的内容都是来源于基表，所有数据库的对象都可以在数据字典上查看得到)