AnarchitecturalStyledefinesasafamilyofsuchsystemsintermsofa()ofstructuralorganization.Morespecificallyanarchitecturalstyledefinesavocabularyof()andconnectortypes,andasetof()onhowtheycanbecombined.Formanystylestheremayalsoexistoneormore(请作答此空)thatspecifyhowtodetermineasystem'soverallpropertiesfromthepropertiesofitsparts.Manyofarchitecturalstyleshavebeendevelopedovertheyears.Thebest-knownexamplesof()architecturesareprogramswrittenintheUnixshell．
A.semantic models B.weak entities C.data schemas D.business models正确答案A
