在Word编辑状态下,可以通过双击状态栏上的“改写”按钮将系统当前的“插入”状态换为“改写”状态。()
A.正确
B.错误
第1题
A.V$BACKUPSET
B.RC_DATABASE
C.V$BACKUP_SET
D.RC_BACKUP_SET
第2题
A.listing the employees who earn the same amount of commission as employee 3
B.finding the total commission earned by the employees in department 10
C.finding the number of employees who earn a commission that is higher than the average commission of the company
D.listing the departments whose average commission is more than 600
E.listing the employees who do not earn commission and who are working for department 20 in descending order of the employee ID
F.listing the employees whose annual commission is more than 6000
第3题
A.V$LOG
B.V$LOFHIST
C.V$LOGFILE
D.V$LOG_HISTORY
第4题
A.V$DATAFILE
B.V$TEMPFILE
C.V$DBFILE
D.V$DATAFILE_HEADER
第5题
A.’SQLALTERDATABASEOPEN’;
B.SQLALTERDATABASE’OPEN’;
C.OPENDATABASE;
D.DATABASEOPEN
第6题
A.RECOVERDATABASE
B.RECOVERTABLESPACE
C.RECOVERDATAFILE
D.ALTERDATABASERECOVERDATAFILE
第7题
A.V$COPY_CORRUPT
B.V$COPY_CORRUPTION
C.V$BACKUP_CORRUPT
D.V$BACKUP_CORRUPTION
第8题
A.V$DATAFILE
B.V$DATAFILE_HEADER
C.DBA_DATA_FILES
D.V$DBFILE
E.V$DATAFILE_ERRORS
第9题
A.Null values are left out of the sort.
B.Character values are displayed from Z to A
C.Date values are displayed with the earliest value first.
D.Null values are displayed last for descending sequences.
E.Numeric values are displayed with the lowest values first.
第10题
A.1day
B.5days
C.7days
D.31days
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