Designingthedatastoragearchitectureisanimportantactivityinsystemdesign.Therearetwomaintypesofdatastorageformats:filesanddatabases.Filesareelectronicofdatathathavebeenoptimizedtoperformaparticulartransaction.Thereareseveraltypesoffilesthatdifferinthewaytheyareusedtosupportanapplication.()storecoreinformationthatisimportanttothebusinessand,morespecifically,totheapplication,suchasorderinformationorcustomermailinginformation.()containstaticvalues,suchasalistofvalidcodesorthenamesofcities.Typically,thelistisusedforvalidation.Adatabaseisacollectionofgroupingsofinformationthatarerelatedtoeachotherinsomeway.Therearemanydifferenttypesofdatabasesthatexistonthemarkettoday.(请作答此空)isgiventothosedatabaseswhicharebasedonolder,sometimesoutdatedtechnologythatisseldomusedtodevelopnewapplications.()arecollectionsofrecordsthatarerelatedtoeachotherthroughpointersInrelationaldatabase,()canbeusedinensuringthatvalueslinkingthetablestogetherthroughtheprimaryandforeignkeysarevalidandcorrectlysynchronized.
A.Legacy database B.Backup database C.Multidimensional database D.Workgroup database正确答案A
