Sunday, October 15, 2017


Infographic: Evolution of the Noble Librarian
Courtesy of: Z39.50

Z39.50 ➨ Z39.50 is a national and international standard defining a protocol for computer-to-computer information retrieval. It is a client–server, application layer communications protocol for searching and retrieving information from a database over a TCP/IP computer network. It is covered by ANSI/NISO standard Z39.50, and ISO standard 23950. The National Information Standards Organization of the United States (NISO) relating to libraries begin with Z39. To use Z39.50, you will need either special software or have an ILS with Z39.50 capabilities. Z39.50 acts like a “back door” into a library catalog. In order to download another library’s records, that library has to allow Z39.50 access to its catalog. If it does, though, there is no fee to pay the library providing the record.


  • History
  • What Z39.50 Does
  • Advantages and Disadvantages
  • Modernization Efforts

READ MORE FROM SOURCE: Z39.50 : Glossary of Library & Information Science


1 Library of Congress Classification - Introduction
2 Library of Congress Classification History and Development
3 Library of Congress Classification Principles and Structure
     3.1 Main Classes
     3.2 Subclasses
     3.3 Divisions
     3.4 Schedule Format
             3.4.1 Preface
             3.4.2 Contents Page
             3.4.3 Outline
             3.4.4 The Body of the Schedule
             3.4.5 Tables
             3.4.6 Index
4 Library of Congress Classification Notation
     4.1 Symbols
     4.2 Expressiveness
     4.3 Hospitality
     4.4 Mnemonics
     4.5 Brevity
5 Building a Call Number Using Library of Congress Classification
6 Marc 21 Coding for Library of Congress Classification Call Numbers
     6.1 Indicators
     6.2 Subfield Codes
7 Tools and Aids for Library of Congress Classification
     7.1 LCC Print Schedules
     7.2 SuperLCCS
     7.3 Classification Web
     7.4 Classification and Shelflisting Manual (CSM)
     7.5 LCC Outline
     7.6 Cataloging Calculator
     7.7 Library of Congress (LCC) Approved Lists
     7.8 Name Authority Records
8 Proposing a New Class Number in LCC
9 Evaluation of the Library of Congress Classification
     9.1 Advantages of LCC
     9.2 Criticisms of LCC (and Criticism of Criticisms)
10 Conclusion
11 References
12 Library of Congress Classification Articles and News
13 Library of Congress Classification Quiz
14 Library of Congress Classification Videos

Saturday, October 14, 2017

Resource Description and Access RDA

Resource Description and Access (RDA) is a new library cataloging standard, successor to AACR2… … ...

Read original article in Librarianship Studies & Information Technology blog: RDA: Resource Description and Access

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Monday, August 14, 2017

PRECIS (Preserved Context Index System)

PRECIS (Preserved Context Index System)

PRECIS (PRESERVED CONTEXT INDEX SYSTEM)   PRECIS is an acronym for PREserved Context Index System or PREserved Context Indexing System. PRECIS is a computer assisted pre-coordinate subject indexing system developed by Derek Austin in 1968 as a result of long research which the Classification Research Group (CRG) undertook to give a new general classification for information control. In 1969 British librarians Derek Austin and Peter Butcher issued PRECIS: A rotated subject index system, published by the Council of the British National Bibliography. This appears to be the first published report on an innovative method for adding subject data in the form of descriptors to the computerized MARC record. This system is considered as the most important development in alphabetical approach to subject specification in recent years.

The system aims at providing an alphabetical subject index which is able to cater to the variant approaches of the users along with their context. In order to achieve this objective, the system arranges the components of a document,  into a significant sequence, thus, all the important components in the string are used as approach points. Simultaneously, the terms are displayed in such a fashion that every term is related to the next term in a context dependent way. Moreover, the system is amenable to computer operation, which further adds to the advantage of the system as the entries will be prepared and arranged automatically by the computer.

  • PRECIS (Preserved Context Index System)
  • Essential Features of PRECIS
  • Concept of PRECIS
  • PRECIS Indexing Procedure
  • Primary Operators
  • Secondary Operators
  • Primary Codes
  • Format of Entry
  • Filing Order
  • Conclusion

ALSO SHARED IN: Library and Information Science Articles and News in 2017

Wednesday, July 26, 2017

What are the Benefits of RDA?

What are the Benefits of RDA?



[Main article: Resource Description and Access]

=> RDA builds on the strengths of AACR2 but has some new features that make it more useful for description as a cataloging code for the digital environment in which libraries now operate.

=> RDA is better at catering for digital resources and for resources with multiple characteristics and will provide more guidance on the creation of authority headings.

=> RDA has been developed with the end-user in mind.

=> RDA provides a consistent, flexible and extensible framework for the description of all types of resources, including digital resources and those with multiple characteristics.
RDA is compatible with internationally established principles, models, and standards.

Friday, July 7, 2017

Resource Description and Access

Resource Description and Access

Glossary of Library & Information Science - RESOURCE DESCRIPTION AND ACCESS (RDA) ➨ RDA stands for “Resource Description and Access” and is the title of the standard, that is the successor to AACR2. Resource Description and Access (RDA) is a standard for descriptive cataloging providing instructions and guidelines on formulating bibliographic data. Resource Description & Access (RDA) is a set of cataloging instructions based on FRBR and FRAD, for producing the description and name and title access points representing a resource. RDA offers libraries the potential to change significantly how bibliographic data is created and used. RDA is a standard for resource description and access designed for the digital world. It provides (i) A flexible framework for describing all resources (analog and digital) that is extensible for new types of material, (ii) Data that is readily adaptable to new and emerging database structures, (iii) Data that is compatible with existing records in online library catalogs. RDA is a package of data elements, guidelines, and instructions for creating library and cultural heritage resource metadata that are well-formed according to international models for user-focused linked data applications.  RDA goes beyond earlier cataloging codes in that it provides guidelines on cataloging digital resources and places a stronger emphasis on helping users find, identify, select, and obtain the information they want. RDA also supports the clustering of bibliographic records in order to show relationships between works and their creators.



Sunday, January 25, 2015

Cataloging Metadata Blog Revived

Cataloging Metadata Blog is being reintroduced. It will be an aggregation of various posts on Cataloging & Metadata. Please check About Cataloging Metadata for its scope and content.

Saturday, October 25, 2014

Cataloging Metadata blog discontinued : Continued by Librarianship Studies blog

Hi all Cataloging Metadata blog is discontinued. Its contents are to be continued by Librarianship Studies blog. The idea is to have a blog covering all the areas of Library and Information Management.

The scope of  Librarianship Studies blog is defined as:
Learn librarianship with Librarianship Studies,a blog on studies, research, techniques, best practices, and latest news on librarianship and library and information science. Whether you are studying library studies (e.g. MLIS degree) doing research (Ph.D.) or a working librarian, this is the place for you....

Tuesday, August 5, 2014

Cataloger's Desktop

Library of Congress
News from CDS

Advanced Look at the New & Enhanced User Interface coming to Cataloger’s Desktop on September 10
First of 3 Weekly Messages . . .


“Favorites” give you the ability to bookmark and annotate important passages and share them with your colleagues, if you like. Create shortcuts to specific spots in Cataloger’s Desktop resources so you can link to them in email messages and your local library’s cataloging policy manuals and training materials.

You can also save searches that you want to re-run in the future, as well as save sessions that reflect recurring cataloging operations.  And— any bookmarks, annotations, or shortcuts you create in the current Cataloger’s Desktop system will carry forward in the new user interface.


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