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【071考试题库】OCP-1Z0-071最新考试题库大全-第42题

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Oracle 12c的OCP考试考3科,分别是071、062、063,对于这些考题,我们专门有人负责收集整理,并由专业的老师对这些考题进行解析,希望可以帮助想考OCP的同学,这里开始介绍071的题库。

每周五晚8点,我们有免费的OCP解析公开课,地址:https://ke.qq.com/course/326223  OCP题库交流群:1015267481,验证ocp

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071考试题库-第42题、choose three

Which three tasks can be performed by DDL statements?

A) preventing data retrieval from a table outside of office hours

B) modifying a table to prevent data that violate certain conditions from being entered in a column

C) preventing any data modification to a table

D) creating multiple savepoints to enable partial rollback of a transaction

E) providing an alternative name for a table

Anser:BCE

(解析:B 答案可以用添加约束来解决;C 答案可以用 alter 命令把表变成只读模式;E 答案可以通过创建同义词来实现,这道题比较灵活,表达的比较隐晦。)

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