WORLDCAT is a union catalog that itemizes the collections of 72,000
libraries in 170 countries and territories that participate in the
Online Computer Library Center (OCLC) global cooperative. It is
OCLC Online Computer
Library Center, Inc. The subscribing
member libraries collectively maintain WorldCat's database .
* 1 History
* 2 Model
* 3 See also
* 4 References
* 5 Further reading
* 6 External links
OCLC was founded in 1967 under the leadership of
Fred Kilgour . That
OCLC began to develop the union catalog technology that
would later evolve into WorldCat; the first catalog records were added
in 1971. It contains more than 330 million records, representing
over 2 billion physical and digital assets in 485 languages, as of
November 2014 . It is the world's largest bibliographic database.
WorldCat itself available free to libraries, but the
catalog is the foundation for other subscription
OCLC services (such
as resource sharing and collection management). In 2003,
the "Open WorldCat" pilot program, making abbreviated records from a
WorldCat available to partner web sites and booksellers, to
increase the accessibility of its subscribing member libraries'
collections. In 2006, it became possible to search
at its website. In 2007,
WorldCat Identities began providing pages for
20 million "identities", predominantly authors and persons who are the
subjects of published titles.
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WorldCat operates on a batch processing model rather than a real-time
model. That is,
WorldCat records are synchronized at intermittent
intervals with the underlying library catalogs instead of real-time or
every day. Consequently:
WorldCat shows that a particular item is owned by a particular
library but does not provide that library's call number .
WorldCat does not indicate whether or not an item is currently
borrowed, lost, undergoing restoration or repair, or moved to storage
not directly accessible to patrons (thereby forcing interested patrons
to submit a retrieval request and wait).
WorldCat does not show whether or not a library owns
multiple copies of a particular title.
As an alternative,
WorldCat allows participating institutions to add
direct links from
WorldCat to their own catalog entries for a
particular item, which enables the user to determine its real-time
status. However, this still requires users to open multiple Web pages,
each pointing to a different OPAC with its own distinctive user
interface design (which places item status in a different portion of
the Web browser display), until they can locate a catalog entry that
shows the item is currently available at a particular library.
Faceted Application of Subject Terminology (FAST)
Library and Archives Canada
Research Libraries UK
Online Computer Library Center (
* ^ "Search for library items". WorldCat. Online Computer Library
Center. Retrieved 2017-03-29.
* ^ "WorldCat.org WHOIS, DNS, & Domain Info - DomainTools".
* ^ A B "A global library resource". Online Computer
. Retrieved January 24, 2014.
* ^ "What is WorldCat?". worldcat.org. Retrieved 13 February 2015.
* ^ A B
Margalit Fox (August 2, 2006). "Frederick G. Kilgour,
Innovative Librarian, Dies at 92".
The New York Times
The New York Times . Retrieved
2009-12-22. Frederick G. Kilgour, a distinguished librarian who nearly
40 years ago transformed a consortium of Ohio libraries into what is
now the largest library cooperative in the world, making the catalogs
of thousands of libraries around the globe instantly accessible to
far-flung patrons, died on Monday in Chapel Hill, N.C. He was 92.
* ^ "A brief history of WorldCat". oclc.org. February 10, 2015.
Retrieved February 13, 2014.
* ^ Hickey, Thomas B. (15 April 2007). "
Another View of the Catalog" (PDF). NextSpace.
OCLC (6): 18–19. ISSN
1559-0011 . Retrieved 18 January 2016.
* Grossman, Wendy M. (21 January 2009). "Why you can\'t find a
library book in your search engine".
The Guardian .