OCP-V13-703

QUESTION 703
704. View the Exhibit and examine the data manipulation language (DML) operations that you performed on
the NEWEMP table. Note that the first two updated are not listed by the Flashback Versions Query.
What could be the reason?
闪回版本查询没有列出第一个的那个查询，什么原因。

A. The first two updated were not explicitly committed.
B. ALTER TABLE caused the recycle bin to release the space.
C. The data definition language (DDL) operation caused a log switch.

D. Flashback Versions Query stops producing versions of rows that existed before a change in the table structure.
闪回版本查询在改变表结构之前停止产生行版本

Correct Answer: D
Section: (none)
Explanation
Explanation/Reference:
本题似乎无合适答案 ， 倾向D