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DIGITAL LIBRARIES: DIGITAL LIBRARIES: AN OVERVIEWAN OVERVIEW
MD AZIZUR RAHMANMD AZIZUR [email protected]@gmail.co
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Digital Library: Digital Library: DefinitionDefinition"a focused collection of digital objects, "a focused collection of digital objects,
including text, video, and audio, along with including text, video, and audio, along with methods for access and retrieval, and for methods for access and retrieval, and for selection, organization, and maintenance of selection, organization, and maintenance of the collection“the collection“
- Ian Witten and David Bainbridge- Ian Witten and David Bainbridge
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Emergence of Internet and W W WEmergence of Internet and W W W
Availability of extraordinary user interface Availability of extraordinary user interface
Availability of resources in plentyAvailability of resources in plenty
Systematic organisation of the collectionsSystematic organisation of the collections
Providing easy access to the collections Providing easy access to the collections from anywhere, any time, any formatfrom anywhere, any time, any format
Multiple access Multiple access
Digital Library – Digital Library – Why?Why?
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Digital Library: Digital Library: CharacteristicsCharacteristics It is a digital counterpart of traditional It is a digital counterpart of traditional librarieslibraries
It owns and controls the informationIt owns and controls the information
It has a unified organizational structure with It has a unified organizational structure with consistent points for accessing the dataconsistent points for accessing the data
It is not a single entityIt is not a single entity
It supports quick and efficient access to a It supports quick and efficient access to a large large number of distributed and interlinked number of distributed and interlinked information information sourcessources
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Contd… It has collections that:
are large and persist over timeare well-organized and managedcontain many formatscontain objects that are unobtainable and
digital aborigine
It includesincludes all the processes and services provided by traditional libraries
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Digital Library (DL): Digital Library (DL): InfrastructureInfrastructure
Collection InfrastructureCollection Infrastructure
Access InfrastructureAccess Infrastructure
Computer and Network InfrastructureComputer and Network Infrastructure
Digital Resource OrganizationDigital Resource Organization
Manpower TrainingManpower Training
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Acquisition of collections available in digital formats
Buying access to external digital collections
Converting datasets of ‘Born Digital’ documents
Conversion of print media to digital media
Optical Character Recognition (OCR)
Creating portal sites or gateways to the electronic collections available on the web
Providing integrated access interface
DL: Collection DL: Collection InfrastructureInfrastructure
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Searching and browsing interfacesInformation retrievalAccess to meta resources
DL: Access InfrastructureDL: Access Infrastructure
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Server – Hardware Components Input devices Storage devices Communication devices
Server – Software Components Image capturing or scanning software Image enhancement and manipulation Integrated library systems Web servers OCR software Database management software
DL: Computer and Network DL: Computer and Network InfrastructureInfrastructure
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Client – Hardware and Software Components Internet Explorer or Netscape Navigator Acrobat Reader Real Player WS_FTP pro MS – Office TIFF Viewer
DL: Computer and Network DL: Computer and Network InfrastructureInfrastructure
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Object naming and addressing Uniform Resource Name (URN)
Digital Object Identifier (DOI)
Online Database Connectivity (ODBC) ODBC Drivers Common Gateway Interface (CGI) Java Database Connectivity (JDBC)
Metadata
DL: Digital Resource DL: Digital Resource OrganisationOrganisation
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Digital document imagingDistributed database managementHypertextInformation storage, search, and retrievalIntegration of multimedia information servicesHandling multilingual collectionsElectronic reference serviceElectronic document delivery serviceSelective dissemination of information (SDI)
DL: Manpower TrainingDL: Manpower Training
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Simple Text or ASCIIStructured Text FormatPage Description LanguagePage Image Format
DL: Formats and Media DL: Formats and Media TypesTypes
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Standardisation
Families of standards
Specification-based interaction
Mediation
Mobile functionality
Digital Library: Inter-Digital Library: Inter-operabilityoperability
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Digital Library: Digital Library: PreservationPreservation
Storage Media
Access to Content
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Digital Library (DL): Digital Library (DL): BenefitsBenefits
Bring the library to the userBring the library to the user
Improved access – searching and browsingImproved access – searching and browsing
Easy storage of informationEasy storage of information
Easy to keep information up-to-dateEasy to keep information up-to-date
Easy to make information available alwaysEasy to make information available always
Wider accessWider access
Collaboration and exchange of ideasCollaboration and exchange of ideas
Improved preservationImproved preservation
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Digital Library (DL): Digital Library (DL): LimitationsLimitations
Technological obsolescence
Cost of content refreshing
Rights management
Inter-operability
Network bandwidth
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Digital Libraries in IndiaDigital Libraries in IndiaDigital Library of India
(DLI)
Indian Institute of Science (IISc)
www.dli.ernet.in
Traditional Knowledge
Digital Library (TKDL)
NISCAIR www.tkdl.res.in
Search Digital Libraries (SDL)
DRTC http://drtc.isibang.ac.in/sdl/
Librarians' Digital
Library (LDL)
DRTC https://drtc.isibang.ac.in
Vidyanidhi University of Mysore
http://www.vidyanidhi.org.in
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ePrints@IIScePrints@IISc
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Librarians’ Digital LibraryLibrarians’ Digital Library
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OpenMED@NICOpenMED@NIC
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Digital Library: OSSDigital Library: OSSGSDL (New Zealand)Eprints (UK)DSpace (USA)ARNO (Netherlands)CDSware (Switzerland)Fedora (USA)i-Tor (Netherlands)MyCoRe (Germany)
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• W W W Virtual Library (www.edoc.com)
• Internet Public Library (www.ipl.org)
• Penn Electronic Library (www.library.upenn.edu/resources)
• BUBL Information Service (http://bubl.ac.uk)
• Internet Index (http://sunsite.berkeley.edu/InternetIndex)