You executed the following command to drop a user: DROP USER scott CASCADE; Which two statements regarding the above command are correct?()
AAll the objects of scott are moved to the Recycle Bin.
BAny objects in the Recycle Bin belonging to scott are purged.
CAll the objects owned by scott are permanently dropped from the database.
DAll the objects of scott in the Recycle Bin must be purged before executing the DROP command.
EAny objects in the Recycle Bin belonging to scott will not be affected by the above DROP command.
当用户为了一个通信目的需要使用多个网络中的资源时,计费管理不能计算总计费用。
A、对
B、错
流行性出血热病程中各期发展过程为()
A、发热期、低血压休克期、多尿期、少尿期、恢复期
B、发热期、多尿期、低血压休克期、少尿期、恢复期
C、发热期、低血压休克期、少尿期、多尿期、恢复期
D、发热期、出血期、少尿期、多尿期、恢复期
E、发热期、中毒期、低血压休克期、少尿期、恢复期
层次分析法的特点是()。
A、分析思路清楚,可将系统分析人员的思维过程系统化、数学化和模型化
B、分析时需要使用的定量数据很多,要求对问题所包含的因素及相关关系具体而明确
C、分析时需要使用的定量数据不多,但要求对问题所包含的因素及相关关系具体而明确
D、适用于多准则、多目标的复杂问题的决策分析
E、适用于少准则、少目标的简单问题的决策分析
微型计算机中的主存储器是()。
Which tuning tool recommends how to optimize materialized views so that these views can take advantage of the general query rewrite feature?()
A、Segment Advisor
B、SQL Access Advisor
C、Undo Advisor
D、SQL Tuning Advisor