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【071题库】最新OCP-071考试题库解析-第9题

【071题库】最新OCP-071考试题库解析-第9题

071考试是OCP考试科目的一种,由于071考题多变,我们专门收集整理了最新的考试题库,并对这些考题进行讲解,希望可以帮助广大考生。

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071题库-第9题、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)

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