Digital library


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Digital library

  1. 1. Digital Library
  2. 2. Digital Library  A digital library is a library in which collections are stored in digital formats (as opposed to print, or other media) and accessible by computers.  The digital content may be stored locally, or accessed remotely via computer networks. A digital library is a type of information retrieval system.
  3. 3. Cont…  It provides the architecture to model, map, integrate, condense and transform scattered information housed in digital documents.  Companies can perform more substantive, accurate and consistent analyses using the digital library as a foundation for decision support system.
  4. 4. Legal cases & contracts Customers Government stake- regulations holders Sales & HumanMarketing resources Corporate DigitalService & Library R&D support engineering suppliers Manufacturing & Documentation, Accounting production manuals, & finance records
  5. 5. Traditional vs. Digital Library  Storage Space  Maintenance cost  Willingness to adopt innovations in technology  Accessibility to users  Simultaneous access
  6. 6. Types of digital libraries  Document Digital Libraries  Data Warehouses
  7. 7. Cont… Document Digital Libraries  It is a distributed network of interlinked information mainly for electronic publishing  Books, reports, paper materials, electronic files, video and audio  Digital document formats( word processing, spreadsheets, audio recordings, digital video)
  8. 8. Types of Digital Documents Active or compound documents Distributed hypertext Structured documents Imaging
  9. 9. Types of Digital Documents Document Imaging  Scanning of documents for storage as a bitmap image  Keywords are entered for indexing and retrieval during scanning  Ex. Insurance companies & other large firms  Imaging standards  TIFF(Tag Image File Format)  ITU-TSS(International Telecommunication Union-telecommunications standardization sector)
  10. 10. Types of Digital Documents  Structured Documents  It provides a clear description of document contents  Database structuring capabilities are applied to individual documents  Ex. Table of contents
  11. 11. Types of Digital Documents  Itprovides the following capabilities-  Document formatting and rendering to suit different information delivery media  The ability to create easily modifiable structure  Easier to search and query  Different structuring standards – SGML, RTF
  12. 12. Types of Digital Documents  Distributed Hypertext  HTML  Active or compound  OLE,CORBA
  13. 13. Data warehouses  Data Warehouses  These are Central Information repositories for combining and storing vast amounts of historical and reference data from a number of different sources.  It is a physical separation of an organization’s operational data systems from its decision support systems.
  14. 14. Benefits  No physical boundary  Round the clock availability  Multiple accesses  Structured approach  Information retrieval  Preservation and conservation  Space  Networking  Cost
  15. 15. Limitations  Although digital libraries do away with these fees, digital libraries can be no less expensive in their own way to operate.  large costs incurred for the conversion of print materials into digital format, for the technical skills of staff to maintain them, and for the costs of maintaining online access (i.e. servers, bandwidth costs, etc.).