【单选题】On Monday, you dropped the DEPT table from your schema and then you re-created the DEPT table in your schema. On Wednesday, you have a requirement to restore the DEPT table from the recycle bin. Which...
A.
You cannot restore the DEPT table by using the Oracle Flashback Drop feature because a table with the name DEPT already exists in your schema.
B.
You can restore the DEPT table by using the Oracle Flashback Drop feature, provided you use the RENAME TO clause.
C.
You cannot restore the DEPT table by using the Oracle Flashback Drop feature because the contents of the recycle bin are purged every 12 hours by default.
D.
You can restore the DEPT table by using the Oracle Flashback Drop feature and a system-generated name will be assigned to the restored table.
【简答题】Section B A) Getting around a city is one thing — and then there's the matter of getting from one city to another. One vision of the perfect city of the future: a place that offers easy access to air ...
【简答题】It is said that the fast pace of our everyday life, as a direct result of the rapid development of telecommunications technology and travel industry, has negative effects on individuals, nations and t...
【单选题】听力原文: The Vietnamese Foreign Minister Nguyan Manh Cam has called for rapid progress towards a trade agreement with the United States. Mr. Cam met with secretary of state Warren Christopher during the ...
A.
Rapid progress had been made towards a trade agreement.
B.
The U. S. has decided to establish full diplomatic relations with Vietnam in July.
C.
Vietnam’s Foreign Ministers has agreed to pay his first official visit to Washington.
D.
Mr. Clinton is confident that the trade agreement will come quickly.