Preservation Metadata and the OAIS Information ModelThe OCLC/RLG Working GroupWhat is OAIS?OAIS Information Model: The Bottom -- From Data to InformationOAIS Information Model: Moving from the Bottom to the TopOAIS Information Model: The Top -- From Object to PackageThree Types of Information PackagesInside the Information PackageImplementing Two of the Components of the OAIS ModelContent Information (CI) AttributesSlide 11Slide 12Slide 13Slide 14Slide 15PDI’s Four CategoriesPDI: 3 Types of Reference InfoPDI: Types of Context InformationPDI: Types of Provenance InformationSlide 20Review of the PDISlide 22ConclusionWhat’s Next to Do?2/26/20042/26/2004Dan SwaneyDan Swaney11Preservation MetadataPreservation Metadataand the OAIS Information Modeland the OAIS Information ModelA Metadata Framework to Support A Metadata Framework to Support the Preservation of Digital Objectsthe Preservation of Digital ObjectsA review of the report by theA review of the report by theOCLC/RLG Working Group on Preservation MetadataOCLC/RLG Working Group on Preservation MetadataJune 2002June 2002 http://www.rlg.org/longterm/pm_framework.pdfhttp://www.rlg.org/longterm/pm_framework.pdf(Report: (Report: http://http://www.oclc.org/research/pmwgwww.oclc.org/research/pmwg//))Presented by Dan SwaneyPresented by Dan Swaney2/26/20042/26/2004Dan SwaneyDan Swaney22The OCLC/RLG Working GroupThe OCLC/RLG Working GroupMarch 2000March 2000–Working Group was Formed by Working Group was Formed by OCLC – OCLC – Online Computer Library Center, Inc.Online Computer Library Center, Inc.RLG – RLG – Resource Library Group, Inc.Resource Library Group, Inc.Started with a White Paper entitledStarted with a White Paper entitled–““Preservation Metadata for Digital Objects: A Review of the State of the Preservation Metadata for Digital Objects: A Review of the State of the Art”Art”–Introduced concepts that were followed by the development of the Introduced concepts that were followed by the development of the actual framework discussed later.actual framework discussed later.2/26/20042/26/2004Dan SwaneyDan Swaney33What is OAIS?What is OAIS?Open Archival Information SystemOpen Archival Information System–May 1999 (Original Model)May 1999 (Original Model)Supported the Space CommunitySupported the Space Community–June 2001 (Revised Model)June 2001 (Revised Model)Extended to support libraries/cultural Extended to support libraries/cultural heritage institutions, gov’t agencies, and heritage institutions, gov’t agencies, and private sectorprivate sector–Information Model embedded in OAISInformation Model embedded in OAISDirect Relevance to Preservation MetadataDirect Relevance to Preservation Metadata2/26/20042/26/2004Dan SwaneyDan Swaney44OAIS Information Model: OAIS Information Model: The Bottom -- From Data to InformationThe Bottom -- From Data to InformationInformation ObjectKnowledgeBaseDataObjectRepresentationInformationDigitalObjectPhysicalObjectORExternal to the Archival SystemProgrammers must Have the knowledge baseTo understand Java sourceRepresentationInformationDescribes the Data Object’s bits:1010101001 = sound file, paragraph of text, an image2/26/20042/26/2004Dan SwaneyDan Swaney55OAIS Information Model: OAIS Information Model: Moving from the Bottom to the TopMoving from the Bottom to the TopInformation ObjectKnowledgeBaseDataObjectRepresentationInformationDigitalObjectPhysicalObjectORExternal to the Archival SystemRepresentationInformationDescribes the Data Object’s bits:1010101001 = sound file, paragraph of text, an image2/26/20042/26/2004Dan SwaneyDan Swaney66OAIS Information Model: OAIS Information Model: The Top -- From Object to PackageThe Top -- From Object to PackageInformation ObjectInformation PackageArchival (AIP)Submission (SIP)Dissemination (DIP)Content InformationPreservationDescriptionInformationPackagingInformationDescriptive Information2/26/20042/26/2004Dan SwaneyDan Swaney77Three Types of Three Types of Information PackagesInformation PackagesInformationProducerArchiveArchivalInformationPackage (AIP)Submission InformationPackage (SIP)DisseminationInformationPackage (DIP)Responding to a Query RequestSubmitting anInformation Object2/26/20042/26/2004Dan SwaneyDan Swaney88Inside the Information PackageInside the Information PackageInformation PackageContent Information(CI)PreservationDescriptionInformation(PDI)PackagingInformationDescriptive Information- ‘Content’ Data Object- Representation Info- Info to manage preservationof Content Info- Reference Info- Provenance Info- Context Info- Fixity Info- Metadata for Resource Discovery- Assists finding aids- An Abstract?- Derived from:CI & PDI - Header block of info that binds together an Archive Information Package- Binds together:- digital object + - assoc. metadata2/26/20042/26/2004Dan SwaneyDan Swaney99Implementing Two of the Implementing Two of the Components of the OAIS ModelComponents of the OAIS ModelFirst: Content Information (CI)First: Content Information (CI)–‘‘Content’ Data Object (CDO)Content’ Data Object (CDO)Raw Data BitsRaw Data Bits– Representation Info (2 components)Representation Info (2 components)Structure Info – technical desc/specStructure Info – technical desc/spec–Example: format, data structs, encodingExample: format, data structs, encoding–Makes CDO Understandable by Machines/SystemsMakes CDO Understandable by Machines/SystemsSemantic Info – explains the dataSemantic Info – explains the data–Example: interpret as English or temperatures Example: interpret as English or temperatures delimited by tabsdelimited by tabs–Makes CDO Understandable by HumansMakes CDO Understandable by Humans2/26/20042/26/2004Dan SwaneyDan Swaney1010Content Information (CI)Content Information (CI)AttributesAttributesContent Information (CI)Package‘Content’ Data ObjectRepresentative Information‘Content’ Data ObjectDescriptionEnvironment Description-Details for Rendering/Viewing in Human-readable form-Defines Attributes: 1. Abstract of Steps-Steps to restore a ZIP file back to files/folders-Steps to restore into a DBMS 2. Structural Type 3. Technical infrastructure (Web Page and all it’s req’d files) 4. File Description 5. Installation requirements 6. Size 7. Access Inhibitors 8. Access Facilitators 9. Significant Properties (whether to enable special features) 10. Functionality (Web Page requires JavaScript) 11.