判断题 若有条件表达式(x)?a＋＋:b＋＋;则表达式中(x)等价于(x!=0)。()

单项选择题 YouworkasadatabaseadministratorforCertkiller.com.YouwanttobenotifiedwhenthenumberofdiskI/Oincreasesby10%ofwhatitwasyesterday.Youcreateabaselinemetricforyesterday’sdiskI/Operformance.Howdoyouusethebaselinemetricstoachieveyourobjective？（）A.SavethebaselineinthedatabaseB.SavethebaselineintheDatabaseControlHomePageC.CreateaproceduretoreadandapplythebaselinetodiskI/OmetricsD.ApplythebaselinetothediskI/OmetricsintheMangeMetricspageE.AlterthediskI/OmetricstoincludebaselinebyusingtheALTERMETRICScommnd

单项选择题 YouworkasadatabaseadministratorforCertkiller.com.IntheCertkillerPRODUCTIONdatabaseyouhavegrantedRESUMABLEsystemprivilegetotheCONNECTrole.Resumablespaceoperationhasbeenenabledforallusersession.YouwantusersNOTtobeawareofanykindofspace-relatedproblemswhileperformingtransactions.Instead，youwanttheproblemtoberesolvedbyadatabasetriggerautomatically.Whichcombinationoftriggeringtimeandeventwouldyouusetoachievethisobjective？（）A.AFTERCREATEB.AFTERSUSPENDC.BEFORECREATED.AFTERTRUNCATEE.BEFORESUSPENDF.AFTERINSERTORDELETEORDELETEG.BEFOREINSERTORDELETEORDELETE