Choose two.
You execute this command:
TRUNCATE TABLE depts;
Which two are true?
A) It drops any triggers defined on the table.
B) It retains the indexes defined on the table.
C) It retains the integrity constraints defined on the table.
D) A ROLLBACR statement can be used to retrieve the deleted data.
E) It always retains the space used by the removed rows.
F) A FLASHBACK TABLE statement can be used to retrieve the deleted data.
Answer::BC
(解析:基本的考点。)
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。