National Partnership for Advanced Computational Infrastructure Digital Library Architecture Reagan Moore Chaitan Baru Amarnath Gupta George Kremenek Bertram Ludaescher Richard Marciano Arcot Rajasekar Wayne Schroeder Michael Wan Ilya Zaslavsky Bing Zhu (

National Partnership for Advanced Computational Infrastructure What Types of Management Systems are Required? Data management Ability to access multiple types of storage systems, across separate administration domains Information management Ability to migrate collection onto new information repository Knowledge management Rule-based ontology mapping Characterization of rules under which collection is formed Management of knowledge bases - Topic Maps

National Partnership for Advanced Computational Infrastructure Information Management Hierarchy Persistent Archives Storage of information model, data model, along with data Data Grid Access to data in a different administration domain Digital Library - Presentation / Information Discovery Interlib - ADEPT, UC Berkeley Digital Library Data Collection Extensible Meta-data catalog - EMCAT Data handling SDSC Storage Resource Broker - SRB Archival Storage High performance storage system - HPSS

National Partnership for Advanced Computational Infrastructure Digital Library Data Management Persistent identifiers Ability to move a data set without the name changing Data set replicas Management of multiple copies of a data set Archival backup of data sets Integration of disk data caches with archival storage Persistent archives Management of a collection through multiple cycles of technology evolution

National Partnership for Advanced Computational Infrastructure SDSC Storage Resource Broker & Meta-data Catalog SRB ADSM HPSS DB2Oracle Unix Application File SIDDBLobj SIDObj SID MCAT Dublin Core Resource User Application Meta-data Remote Proxies DataCutter Third-party copy

National Partnership for Advanced Computational Infrastructure Common Information Model eXtensible Markup Language (XML) Use tags to define semantic context for components of the data set Document Type Definition (DTD) Provides semi-structured representation for organizing tags that can be applied to groups of digital objects Development of standards for tags Digital sky, Protein Data Bank, Neuroscience brain images California Digital Library - Art Museum Image Consortium

National Partnership for Advanced Computational Infrastructure Applications Support for distributed data collections Federation of data collections to form digital library Integration of digital libraries with archives Finding aids for federation of digital libraries through mediation of information Data grids for data access Persistent archives

National Partnership for Advanced Computational Infrastructure TAPE DISK CD FTP Media Handlers METADATA REPOSITORY RECORDS REPOSITORY Accessioning Work Bench (snapin) Text Image Photo Video Audio Geographical Information System Compound Records WEB Database Metadata wrapper record Reference Workbench (snapin) Arrangement A R C Catalog Order Fulfillment Retrieve Records WRAPPERWRAPPER ACCESSIONARCHIVESREFERENCETRANSFER FTP TAPE DISK CD UNWRAPPERUNWRAPPER Electronic Records Archive ( ERA ) Query & Reference Tools Internet Intranet Presentation

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