A. The FRA disk group has an asynchronous I/O bottleneck
B. The least number of I/Os are performed on the last data file in the list
C. The number of times that the backup or restore process directed the OS to wait until an I/O was complete is the highest for the last data file in the list
D. The number of times that the backup or restore process made an OS call to poll for I/O completion in Nonblocking mode is the least for the FRA disk group
第1题:
Inference means that we often infer or make guesses as to what the speaker intends to mean when he says something
A、implicature
B、Deixis
C、Pragmatics
D、Inference
第2题:
检查
A.expect
B.except
C.excuse
D.examine
第3题:
利用SQL命令从职工表中派生出含有“职工号”、“姓名”字段的视图,下列语句正确的是
A.CREATE VIEW ZG_view; SELECT职工号,姓名FROM职工表
B.CREATE VIEW ZG_view AS; SELECT职工号,姓名FROM职工表
C.CREATE QUERY ZG_view; SELECT职工号,姓名FROM职工表
D.CREATE QUERY ZG_view AS; SELECT职工号,姓名FROM职工表
第4题:
第5题:
利用SQL命令从职工表中派生出含有“职工号”、“姓名”字段的视图,下列语句正确的是A) CREATE VIEW ZG_view; SELECT 职工号,姓名FROM职工表
B.CREATE VIEW ZG_view AS; SELECT 职工号,姓名 FROM 职工表
C.CREATE QUERY ZG_view; SELECT 职工号,姓名 FROM 职工表
D.CREATE QUERY ZG_view AS; SELECT 职工号,姓名 FROM 职工表
第6题: