digital library technologies
Post on 22-Jan-2018
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Shriram Pandey
Asst. Professor & In-Charge
MLS University, Udaipur
(CPDL-1/Block-1/Unit-2)
Lesson Plan What are the functional components of a digital
library
Association of technologies at different level of DL
Digital Library Component
Selection and Acquisition
This component include: Selection of documents to be added, digitization
Organization
Key process involved assignments of metadata
Indexing and storage
Carries out indexing and storage of documents and metadata
Repository
Core component of the DL consists document objects, metadata and indexes created for the purpose of search and retrieval
Search and Retrieval Front –end; used by the end users to browse, search,
retrieve and view the content of digital library.
Digital Library Website This is the server computer that hosts the digital library
collection and presents the collection to the user in the form of a website home page.
Network connectivity For online access, the digital library website computer
should have dedicated connection to the intranet and or internet.
Association of Technologies Organization (Assigning Metadata) Preservation
Documents formats and storage Repositories/digital library systems
Dspace, Fedora, CONTENTdm, DLXS, .. Identifiers Standards
URL, PURL, DOI Federation , metasearch and Search Retrieval
standards OAI- PMH/Z39.50/OpenURL/Cross Ref/SRU/SRW
Markup Standards: HTML, SGML, XML Emerging Technologies: Semantic Digital Library
Technology Level: Metadata Characteristics of a
document
Key of locating , using and
processing digital content
Types :
1.Descriptive Metadata
2.Stuctered Metadata
3.Administrative Metadata
1)Metadata Descriptive Metadata
Allows discovery of collection or objects through the use of search tool
Well known DM is : MARC, Dublin Core
Structured Metadata Describes the associations within or among related individual
information objects.
e.g. A book which consists of pages and chapters
Administrative Metadata Facilitates metadata facilities access management and
preservation of digital resources.
Provide a record of how and when an object was created as well as archival and right management information
2)Documents formats and storage Text Format :
ASCII: simple, no formatting, accessible
word processors: formatting, access limited
PDF: formatted, complex, access limited
Image Format: There are a great many image formats.
.BMP .TIF .GIF .PNG .WMF .PICT .PCD .EPS .EMF .CGM
.TGA .JPG
JPG is more general
Sound Formats
.WAV .MID .SND .AUD .mp3
Video Formats
.AVI .MOV .MPG .QT, MPEG4
Web Page
.HTM .HTML .DHTML .HTMLS .XML
Programs
.COM .EXE
Existing OSS DL Software JeromeDL
a social semantic digital library makes use of Semantic Weband Social Networking technologies to enhance bothinteroperability and usability
Dspace
Developed by HP-MIT Alliance, in 2002.Available underBSD(Berkeley Software distribution) license.
Fedora
delivers flexible service-oriented architecture to managingand delivering content in the form of digital objects
Eprints
Developed by School of Electronic and Computer Science,University of Southampton, UK in 2000
Greenstone
Produced by New Zealand Digital Library Project at theUniversity of Waikato, and developed and distributed incooperation with UNESCO and the Human Info NGO.
Semantic Digital Library
VMOU, KOTA
CPDL-1/Block-1/Unit-2
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