请简述什么是DBA及DBA的作用。
请简述什么是DBA及DBA的作用。
相关考题：
Youwanttoviewthenameofaprogramassociatedwithajobformakingsomechangestotheprogram.Whichviewwillyouquerytofindthenameoftheprogramassociatedwiththejob?() A.DBA_SCHEDULER_JOB_RUN_DETAILSB.DBA_SCHEDULER_RUNNING_JOBSC.DBA_SCHEDULER_JOBSD.DBA_SCHEDULER_JOB_LOG
Whichviewwillyouusetoviewinformationregardingthejobsthatarecurrentlyrunninginadatabase?() A.DBA_SCHEDULER_RUNNING_JOBSB.DBA_SCHEDULER_JOB_RUN_DETAILSC.DBA_SCHEDULER_JOBSD.DBA_SCHEDULER_JOB_LOG
YouworkasadatabaseadministratorforCertkiller.com.Inyourdevelopmentenvironmentenvironment，thedevelopersareresponsibleformodifyingthetablestructureaccordingtotheapplicationrequirements.However，youwanttokeeptrackoftheALTERTABLEcommandsbeingexecutedbydevelopers，soyouenableauditingtoachievethisobjective.Whichtwoviewswouldyourefertofindouttheauditinformation？（）A.DBA_AUDIT_TRAILB.DBA_AUDIT_SESSIONC.DBA_FGA_AUDIT_TRAILD.DBA_COMMON_AUDIT_TRAIL
查看审计策略是否生效的视图是?() A. DBA_AUDIT_EXISTSB. DBA_AUDIT_OBJECTC. DBA_AUDIT_POLICY_COLUMNSD. DBA_AUDIT_POLICIESE. DBA_AUDIT_SESSION
Inordertofindouthowmanydatabaseobjectsauserhascreated,whichviewwouldtheDBAqueryintheOracledatadictionary?() A.DBA_USERSB.DBA_OBJECTSC.DBA_TS_QUOTASD.DBA_TAB_PRIVS
Todeterminethespaceallocatedfortemporarysegments,theDBAcanaccesswhichofthefollowingviews?() A.DBA_TABLESPACESB.DBA_TABLESC.DBA_SEGMENTSD.DBA_FREE_SPACE
In order to find out how many database objects a user has created, which view would the DBA query in the Oracle data dictionary? （）A、DBA_USERS B、DBA_OBJECTS C、DBA_TS_QUOTAS D、DBA_TAB_PRIVS
Which Scheduler view（s） can be queried to see which jobs are currently executing？（）A、 DBA_SCHEDULER_JOB_RUN_DETAILSB、 DBA_SCHEDULER_RUNNING_JOBSC、 DBA_SCHEDULER_CURRENT_JOBSD、 DBA_SCHEDULER_JOBSE、 DBA_SCHEDULER_EXECUTING_JOBS
问答题请简述XPON系统的DBA的定义及功能？