流域机构应明确本流域水利工程质量的（)单位。A．最高检测B．最终检测C．中间检测D．最后检测

e, EMPLOYEE_ID is the primary key. MGR_ID is the ID of managers and refers to the EMPLOYEE_ID. The JOB_ID column is a NOT NULL column.Evaluate this DELETE statement:DELETE employee_id, salary, job_idFROM employeesWHERE dept_id = 90;Why does the DELETE statement fail when you execute it?（）

A.There is no row with dept_id 90 in the EMPLOYEES table.

B.You cannot delete the JOB_ID column because it is a NOT NULL column.

C.You cannot specify column names in the DELETE clause of the DELETE statement.

D.You cannot delete the EMPLOYEE_ID column because it is the primary key of the table.

A.list.add（"foo"）；

B.Objecto=list；

C.Strings=list.get（0）；

D.list=newArrayList（）；

A.RESTOREDATAFILE’/DISK2/user_data01.dbf’

B.RESTOREDATAFILE’/DISK3/user_data01.dbf’

C.SETNEWNAMEFOR’/DISK3/user_data01.dbf’TO’/DISK2/user_data01.dbf’

D.SETNEWNAMEFOR’/DISK2/user_data01.dbf’TO’/DISK3/user_data01.dbf’

A.Dynamicserviceregistrationrequiresconfigurationinthelistener.orafile.

B.DynamicserviceregistrationcanbeusedonlywithanOracle9/instance.

C.DynamicserviceregistrationcannotregisteralocallistenerthatdoesnotuseTCP/IPorport1521.

D.ThePMONbackgroundprocessautomaticallyregisterseachdatabaseinstanceifthenecessary parametershavebeensetinthedatabaseinitializationparameterfile.

A.Onlyhost

B.Onlylocal

C.Eitherhostorlocal

D.Bothhostandlocal

A.imphr/hrTABLES=（ts_employees）rows=y

B.impsystem/managerFROMUSER=hrfile=expdat.dmp

C.imphr/hrTRANSPORT_TABLESPACE=yfile=expdat.dmp

D.impsystem/managerTRANSPORT_TABLESPACE=yTABLESPACE=ts_employees

A.Thelocationoftheserver.

B.TheOracleuserbeingconnected.

C.Privilegesandroleinformation.

D.Protocolinvolvedintheconnection.

E.Howtohandleexceptionsandinterrupts.

istrationbeforeusinginformationstaticallyconfigured.Someservicessuchasheterogeneousservicesandexternalproceduresrequiretheuseofinformationstaticallyconfiguredwithinlistener.ora.Inordertosupportthis，whichtoolcouldbeusedtoconfigurethelistenerstatically？（）

A.OracleNetManager

B.ListenerControlUtility

C.OracleNetControlUtility

D.OracleNetConfigurationAssistant

A.LOG_ARCHIVE_DEST

B.LOG_ARCHIVE_START

C.LOG_ARCHIVE_FORMAT

D.LOG_ARCHIVE_MAX_PROCESSES

YourdatabaserunsinNOARCHIVELOGmode，andisbackedupeverynightusingRMANscripts.However，lastnightyourassistantDBAperformedamanualoperatingsystembackup，insteadofrunningthescripts.Todayyourdatabasecrashedandyounowwanttousethebackupsfromlastnight.Whatdoyouneedtodo？（）

A.Youneedtoperformtherestoreandrecoveroperationsmanually,becausethebackupwasmademanually.

B.Firstyouneedtoresynchronizethecatalogwiththecontrolfile,andthenyoucanuseRMANtorecoverthedatabase.

C.FirstyouneedtoaddthebackuptothecatalogusingtheCATALOGcommand,andthenyoucanuseRMANtorecoverthedatabase.

D.YoucanjustuseRMANandrecoverthedatabase,becauseRMANautomaticallyupdatesthecatalogwiththebackupinformation.