首页 > 其他 > 详细

【OCP认证12c题库】CUUG 071题库考试原题及答案(27)

时间:2019-02-21 11:52:04      阅读:171      评论:0      收藏:0      [点我收藏+]
27.choose two

The SQL statements executed in a user session are as follows:

SQL> CREATE TABLE product

(pcode NUMBER(2),

pname VARCHAR2(10));

SQL> INSERT INTO product VALUES (1, ‘pen‘);

SQL> INSERT INTO product VALUES (2,‘pencil‘);

SQL> SAVEPOINT a;

SQL> UPDATE product SET pcode = 10 WHERE pcode = 1;

SQL> SAVEPOINT b;

SQL> DELETE FROM product WHERE pcode = 2;

SQL> COMMIT;

SQL> DELETE FROM product WHERE pcode=10;

SQL> ROLLBACK TO SAVEPOINT a;

Which two statements describe the consequences of issuing the ROLLBACK TO SAVE POINT a command in the session?

A) Only the second DELETE statement is rolled back.

B) No SQL statements are rolled back.

C) Both the DELETE statements and the UPDATE statement are rolled back.

D) The rollback generates an error.

E) Only the DELETE statements are rolled back.

Answer:BD

(因为 commit 操作,前面所有的保存点都结束)

【OCP认证12c题库】CUUG 071题库考试原题及答案(27)

原文:http://blog.51cto.com/13854012/2352812

(0)
(0)
   
举报
评论 一句话评论(0
关于我们 - 联系我们 - 留言反馈 - 联系我们:wmxa8@hotmail.com
© 2014 bubuko.com 版权所有
打开技术之扣,分享程序人生!