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. 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. Legal cases
& contracts
Customers Government
stake- regulations
holders
Sales & Human
Marketing resources
Corporate
Digital
Service & Library R&D
support engineering
suppliers Manufacturing
&
Documentation, Accounting production
manuals, & finance
records
5. Traditional vs. Digital Library
Storage Space
Maintenance cost
Willingness to adopt innovations in
technology
Accessibility to users
Simultaneous access
6. Types of digital libraries
Document Digital Libraries
Data Warehouses
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. Types of Digital Documents
Active or compound
documents
Distributed hypertext
Structured documents
Imaging
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. 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. 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. Types of Digital Documents
Distributed Hypertext
HTML
Active or compound
OLE,CORBA
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. Benefits
No physical boundary
Round the clock availability
Multiple accesses
Structured approach
Information retrieval
Preservation and conservation
Space
Networking
Cost
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.).