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DIGITAL LIBRARIES: DIGITAL LIBRARIES: AN OVERVIEWAN OVERVIEW

MD AZIZUR RAHMANMD AZIZUR RAHMANazizurmlis@gmail.coazizurmlis@gmail.co

mm

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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)