题目内容

You query the ORDERS table and discover that order number 1101 is missing. One of your reports, generated at 5:00 A.M. on April 23, 2005 using Oracle Reports, includes this order number in the output. You have inserted 100 new orders into the ORDERS table since generating this report. Which flashback technology would you use to recover order number 1101 into the ORDERS table without losing the 100 orders that you added after the report was generated?()

A. Flashback Table
B. Flashback Query
C. Flashback Version Query
D. Flashback Transaction Query

查看答案
更多问题

重要负荷(用户)通常指故障或非正常切除该负荷(用户),不会造成重大政治影响和经济损失,或威胁人身安全和造成人员伤亡等。()

A. 正确
B. 错误

电网内设有相间距离和接地距离两类。前者主要用作保护相间短路,后者主要用作保护接地故障,正常投退方式以通知单为准。()

A. 正确
B. 错误

抢险救援过程中人员抢救的要求有哪些?

上盘相对下降,下盘相对上升的断层叫()。

A. 正断层
B. 逆断层
C. 平移断层
D. 平推断层

答案查题题库