1	The Fedora Project DLF Forum Albuquerque, NM November 17, 2003
2	The Fedora Project Fedora Digital Object Repository System Extensible digital object model Repository System exposed via Web service APIs Scalable, persistent storage for content and metadata Local and remote content Associate services with objects Content versioning Fedora Use cases Content Management (CMS) Digital Library architecture Digital Asset Management Institutional Repository Scholarly publishing Preservation Open source software
3	Fedora History Research (1997-present) : DARPA and NSF-funded research project at Cornell Reference implementation developed at Cornell First Application (1999-2001) : University of Virginia digital library prototype Scale/stress testing for 10,000,000 objects Open Source Software (2002-present): Andrew W. Mellon Foundation granted Virginia and Cornell $1 million to develop a production-quality Fedora system Fedora 1.0 released in May 2003
4	Fedora Motivations Generic model to manage/access heterogeneous content Operations via the digital object abstraction; default disseminator Extensibility Add new functionality to objects via service associations Object Lifecycle and preservation Content versioning and event history Content repurposing Same content in different objects; dynamic transformations Easy integration with other applications and systems Web services with open APIs Clear separation of server from clients/web user interfaces Does not assume any one workflow or end-user application
5	Digital Object Model
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8	Some Common Use Cases [Simple Image] Image Manip + DC graph [Scholarly Publication] Document Transformation
9	Content Versioning [Demo]
10	Repository System software distribution
11	Fedora 1.2 Software Feature Set Open Fedora APIs Repository as web services (REST and SOAP bindings); WSDL interface defs Flexible Digital Object Model Content View: objects as bundle of items (content and metadata) Service View: objects as a set of service methods (“behaviors”) Extensible functionality by associating services with objects Repository System Core Services: Management, Access/Search, OAI-PMH Storage: XML object store; relational db object cache; relational db object registry Mediation - auto-dispatching to distributed web services for content transformation Auto-Indexing – system metadata and DC record of each object HTTP Basic Authentication and Access Control Built-in disseminator services: XSLT x-form, image manipulation, xml-to-PDF Content Versioning Automatic version control (saves version of content/metadata when modified) Enables date-time stamped API requests (see object as it looked at a point in time) Clients Fedora Administrator: GUI client to create/maintain objects Default Web browser interface: search; access objects via default disseminator Command line utilities (batch load, ingest, purge, others) Migration Utility – mass export/ingest
12	Fedora Repository Service Interfaces Management Service (API-M) Ingest - XML-encoded object submission Create - interactive object creation via API requests Maintain - interactive object modification via API requests Validate – application of integrity rules to objects Identify - generate unique object identifiers Security - authentication and access control Preserve - automatic content versioning and audit trail Export - XML-encoded object formats Access Service (API-A and API-A-LITE) Search - search repository for objects Object Reflection - what disseminations can the object provide? Object Dissemination - request a view of the object’s content OAI-PMH Provider Service OAI-DC records
13	Client and Web Service Interactions
14	Fedora Mapping to OAIS
15	Fedora Software Distribution Package Open Source (Mozilla Public License) 100% Java (Sun Java J2SDK1.4) Supporting Technologies Apache Tomcat 4.1 and Apache Axis (SOAP) Xerces 2-2.0.2 for XML parsing and validation Saxon 6.5 for XSLT transformation Schematron 1.5 for validation MySQL and Mckoi relational database Oracle 9i support Deployment Platforms Windows 2000, NT, XP Solaris Linux
16	Fedora in Use
17	Projects using Fedora University of Virginia: digital library (images, EAD, e-texts) VTLS: basis for new commercial product (library system) Indiana University: EVIA Digital Archive (video) Northwestern: academic technologies (images, art, video, e-texts) Rutgers University: digital library (e-journals, numeric data) Tufts University: educational (VUE/concept maps); digital library Yale University: Electronic Records Archive New York University: Humanities Computing Group
18	Sampling of sites using/evaluating Fedora: JSTOR American Geophysical Union NSDL at Cornell Cornell Information Technologies British Library National Library of Portugal Society of Biblical Literature National Archives of Australia Office of Defense Resources, Thailand Monash University, Australia Oxford Digital Library Harris Corporation (R&D for digital archives)
19	Fedora Downloads since May 2003 Total downloads: 1427 Average downloads per day: 9 # Countries: 32 Types of orgs: Universities: libraries, IT, departments Software and technology companies Defense/military Banks National libraries and archives Publishers Research labs Library automation vendors Scholarly societies
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31	Future Software Releases Fedora Object XML (FOXML) Internal storage format; direct expression of Fedora object model Better support for relationships (“kinship” metadata) Better support for audit trail (event history) Format identifiers for dynamic service binding Shibboleth authentication Policy Enforcement XACML expression language Fedora policy enforcement module Web interface for easy content submission Batch object modification utility Administrative Reporting Object Event History (ABC/RDF disseminations) Better support for “collections” New ingest and export formats (METS1.3, DIDL)
32	Future Development Proposals Digital Library in a Box Full-featured DL application with “Fedora inside” Optimized for common set of content types Fedora Power Server Integrity Management Tools Service and link liveness checker Fault Tolerance Mirroring and Replication Peer-to-peer interoperability features Repository clustering Load balancing Object Creation Tools Workflow applications based on content models Web interface for document/content submission
33	Questions