A digital library is an integrated set of services for capturing, cataloguing, storing, searching, protecting, and retrieving information, which provide coherent organization and convenient access to typically large amounts of digital information.

1. DIGITAL LIBRARY ARCHITECTURE
By,
Ms. Sarika Meher
Library Professional Trainee
th

2. Contents
 Introduction
 Definition
 Criteria for a DL
 Principles for DL Design
 Components of a DL
 Architecture of DL
 DL Services
 DL Models
 DL: Myths
 References

3. Introduction
A digital library is an integrated set of services for
capturing, cataloguing, storing, searching, protecting,
and retrieving information, which provide coherent
organization and convenient access to typically large
amounts of digital information.

4. A consolidated definition by different
authorities:
Digital Libraries are systems that combine machinery of the
digital computing , storage & communication, the content, the
software needed to reproduce, emulate and extend the
services of collecting, cataloguing, finding & disseminating
information offered by traditional libraries.
A digital library can have multi-tier architecture. Different digital
libraries follow different architectures and models. Here we
discuss the basic concepts and principles involved in its
design and architecture.

5. CRITERIA FOR DIGITAL LIBRARY:
To develop a digital library system, the following criteria can be
considered:
1. Low cost, including all hardware and software components
2. Technically simple to install and manage
3. Robust
4. Scalable
5. Open and inter-operable
6. Modular
7. User Friendly
8. Multi-user (including both searching and maintenance);
9. Multimedia digital object enabled
10. Platform independent (including both client and server
components).

6. Principles For Digital Library Design
The following principles guide the development of the architecture.
a. Service driven
b. Open architecture
c. Scalability
d. Preservation
e. Privacy
f. Practicality
g. Modularity
h. Time frame
i. Client support

7. Technical Components of Digital Library
A. User Interface
B. Repository
c. Handle system
D. Search System

8. A. User Interface
User
Interface
End User
Browser
Client
service
Administrator
Browser Client service
B. Repository

9. C. Handle System:
D. Search System
• Index
• Search Interface
• Catalogues
• Directories

10. A Generic Architecture For A Digital Library
System:
A Digital Library System may consist of four layers
1. A Database Management System (DBMS)
2. Digital Objects Server
3. Digital Library Middleware
4. Digital Library Clients

11. [Digital Library Architecture]

12. Digital Library Services

13. Models of Digital Library

14. Digital Library Reference Model

15. Streams Text, Video, Audio, Image Describes properties of the DL
Content such as
Structures Collection, Catalog, hypertext,
Document, Metadata
Specifies Organizational aspect
of the DL Content
Spaces Measures, measurable, topological,
Vector, Probabilistic
Define logical and
Presentational views of several
DL Components
Scenarios Searching, Browsing,
Recommending
Details of the Behavior of DL
Services
Societies Administrator, Manger, User Defines administrator and
managers responsible for
running DL Services and
relationship among them
A brief Introduction to the 5S Model

16. Digital Library: Myths
Myth 1: The Internet is the Digital Library.
Myth 2: The myth of a single digital library or one-window
view of digital library collections.
Myth 3: Digital libraries will provide more equitable access,
anywhere, any time.
Myth 4: Digital libraries will be cheaper than print libraries.

17. References
 Pandey, R. (2003). Digital Library Architecture. From
http://dlissu.pbworks.com/w/file/fetch/44829234/B_architecture.pdf
 Gourley, D. An Architecture for the Evolving Digital Library. From
https://net.educause.edu/ir/library/html/edu0122/edu0122.html
 Bogen, M., Borowski, M., Heisterkamp, S. (2001). Requirements and
Architecture for Administration and Maintenance of Digital Object
Libraries. From
http://www.museumsandtheweb.com/mw2001/papers/bogen/bogen.html
 Candela, L., Castelli, D., Pagano, P. (2007). Setting the Foundations of Digital
Libraries. D-Lib Magazine, 10(3-4), 1082-9873. From
http://www.dlib.org/dlib/march07/castelli/03castelli.html
 Chapter 5. Technical Information. From
http://www.dlib.org/dlib/february97/cnri/02arms2.html
 Digital Libraries/Conceptual frameworks, models, theories, definitions.
Retrieved from
https://en.wikiversity.org/wiki/Digital_Libraries/Conceptual_frameworks,_
models,_theories,_definitions
 https://images.google.com/