Entity Types    Type Name Type Description Edited by Author Edited by Editor Edited by Admin 0 Untyped any resource not classified as one of the other types True True True 1 SystemRoot the root for the entire PORTAL-DOORS system False False True 10 PortalRoot the root for all PORTAL registries False False True 11 PortalPrimary a primary PORTAL registry False False True 12 PortalSecondary a secondary PORTAL registry False True True 20 DoorsRoot the root for all DOORS directories False False True 21 DoorsPrimary a primary DOORS directory False False True 22 DoorsSecondary a secondary DOORS directory False True True 30 NexusRoot the root for all NEXUS registrars False False True 31 NexusPrimary a primary NEXUS registrar False False True 32 NexusSecondary a secondary NEXUS registrar False True True 40 Organization any named organization True True True 50 Person any named person True True True 60 OfflinePhysicalEntity any offline or physical resource True True True 61 InanimatePhysicalObject a real world thing True True True 62 AnimatePhysicalBeing a real world life form True True True 70 OnlineVirtualEntity any online or virtual resource True True True 71 TerminologyItem an item in a controlled terminology False True True 72 TaxonomyItem an item in a controlled taxonomy False True True 73 ThesaurusItem an item in a controlled thesaurus False True True 77 DataRecord datum in a data repository (record in database) True True True 78 ComputingTool client-based software tool/application for processing data True True True 79 ComputingService server-based online service for processing data True True True 80 Publication any publication including books, articles, papers, etc True True True 81 AudioItem audible sound item True True True 82 ImageItem static visible image item True True True 83 VideoItem dynamic visible image sequence True True True 84 MultiMediaItem mixed (text/audio/image/video) multimedia item True True True 90 OneDimSequence any one dimensional sequence of symbols True True True 91 MultiDimSignal any multidimensional signal, dynamic volumetric imaging, etc True True True 99 MetaResourceEntity resource that describes another resource True True True