Cataloging provides information such as author's names, titles, and subject terms that describe resources, typically through the creation of bibliographic records.
Since the 1970s these metadata are in machine-readable form and are indexed by information retrieval tools, such as bibliographic databases or search engines.
A cataloger is an individual responsible for the processes of description, subject analysis, classification, and authority control of library materials.
Catalogers serve as the "foundation of all library service, as they are the ones who organize information in such a way as to make it easily accessible".
Johann Tritheim, a German librarian, was the first to create a bibliography in chronological order with an alphabetical author index.
In the 17th century Sir Thomas Bodley was interested in a catalog arranged alphabetically by author's last name as well as subject entries.
[11] After the French Revolution, France's government was the first to put out a national code containing instructions for cataloging library collections.
[17] The Library of Alexandria is reported to have had at least a partial catalog consisting of a listing by Callimachus of the Greek literature called "Pinakes".
[19] Back in Medieval times, the library of the Sorbonne in Paris had accumulated more than one thousand books, and in 1290 their catalog pioneered the use of the alphabet as an organizing tool.
Two 17th century authors, Gabriel Naudé, in France, and John Dury, in Scotland, both developed theories of systematic organization of libraries.
[21] In the 20th century, library cataloging was forced to address new formats for materials, including sound recordings, movies, and photographs.
Lubetzky's writings revealed the weaknesses in the existing rules, and spoke to the need for preparing a set of standards for a more complete and succinct code.
[21] The published American and Anglo-American cataloging rules in the 20th century were:[21] The 21st century brought renewed thinking about library cataloging, in great part based on the increase in the number of digital formats, but also because of a new consciousness of the nature of the "Work" in the bibliographic context, often attributed to the principles developed by Lubetzky.
These rules were based on the earlier Breslauer Instructionen of the University Library at Breslau by Karl Franz Otto Dziatzko.
After the adoption of the Paris Principles (PP) in 1961, Germany developed the Regeln für die alphabetische Katalogisierung (RAK) in 1976/1977.
These rules organize the bibliographic description of an item in the following eight areas: title and statement of responsibility (author or editor), edition, material specific details (for example, the scale of a map), publication and distribution, physical description (for example, number of pages), series, notes, and standard number (ISBN).
In subject databases such as Chemical Abstracts, MEDLINE and PsycINFO, the Common Communication Format (CCF) is meant to serve as a baseline standard.
Resource Description and Access (RDA) is a recent attempt to make a standard that crosses the domains of cultural heritage institutions.
[2] Mistakes and biases in cataloging records can "stigmatize groups of people with inaccurate or demeaning labels, and create the impression that certain points of view are more normal than others".
[43] Social responsibility in cataloging is the "fair and equitable access to relevant, appropriate, accurate, and uncensored information in a timely manner and free of bias".
[2] In order to act ethically and in a socially responsible manner, catalogers should be aware of how their judgments benefit or harm findability.
[2] As stated by Knowlton, access points "should be what a particular type of library patron would be most likely to search under -- regardless of the notion of universal bibliographic control.
[42] As stated by Tavani, a code of ethics for catalogers can "inspire, guide, educate, and discipline" (as cited in Bair, 2005, p. 22).
Bair suggests that an effective code of ethics for catalogers should be aspirational and also "discuss specific conduct and actions in order to serve as a guide in actual situations".
In P&A, Berman listed 225 headings with proposed alterations, additions, or deletions and cross-references to "more accurately reflect the language used in addressing these topics, to rectify errors of bias, and to better guide librarians and readers to material of interest".
[43] Berman is well known for his "care packages," mailings containing clippings and other materials in support of changes to subject headings and against racism, sexism, homophobia, and governmental secrecy, among other areas for concern.
Knowlton states that his intent for this table is to "show how many of Berman's proposed changes have been implemented" and "which areas of bias are still prevalent in LCSH."
Another 54 (24%) of headings have been changed but only partially resolve Berman's objections, and "(which) may leave other objectionable wording intact or introduce a different shade of bias."
[43] Building on Berman's critique of cataloging practices, queer theorists in library and information science such as Emily Drabinski, Amber Billey and K.R.
[45] Utilizing queer theory in conjunction with library classification and cataloging requires perspectives that can present both ethically and politically sound viewpoints that support marginalized persons such as women, people of color, or members of the LGBTQ+ community.