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WorldCat
WorldCat
is a union catalog that itemizes the collections of 72,000 libraries in 170 countries and territories[3] that participate in the Online Computer Library Center
Online Computer Library Center
(OCLC) global cooperative. It is operated by OCLC
OCLC
Online Computer Library
Library
Center, Inc.[4] The subscribing member libraries collectively maintain WorldCat's database, the world's largest bibliographic database. OCLC
OCLC
makes WorldCat
WorldCat
itself available free to libraries, but the catalog is the foundation for other subscription OCLC
OCLC
services (such as resource sharing and collection management).

Contents

1 History 2 Model 3 See also 4 References 5 Further reading 6 External links

History[edit] OCLC
OCLC
was founded in 1967 under the leadership of Fred Kilgour.[5] That same year, OCLC
OCLC
began to develop the union catalog technology that would later evolve into WorldCat; the first catalog records were added in 1971.[5][6] In 2003, OCLC
OCLC
began the "Open WorldCat" pilot program, making abbreviated records from a subset of WorldCat
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 WorldCat
WorldCat
directly 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.[7] As of December 2017, WorldCat
WorldCat
contains over 400 million bibliographic records in 491 languages, representing over 2.6 billion physical and digital library assets,[3] and the WorldCat
WorldCat
persons dataset (mined from WorldCat) includes over 100 million people.[8] Model[edit]

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WorldCat
WorldCat
operates on a batch processing model rather than a real-time model. That is, WorldCat
WorldCat
records are synchronized at intermittent intervals with the underlying library catalogs instead of real-time or every day. Consequently:

WorldCat
WorldCat
shows that a particular item is owned by a particular library but does not provide that library's call number. WorldCat
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). Furthermore, WorldCat
WorldCat
does not show whether or not a library owns multiple copies of a particular title.

As an alternative, WorldCat
WorldCat
allows participating institutions to add direct links from WorldCat
WorldCat
to their own catalog entries for a particular item, which enables the user to determine its real-time status.[4] 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. See also[edit]

Copac Faceted Application of Subject Terminology (FAST) Library
Library
and Archives Canada Research Libraries UK

References[edit]

^ "Search for library items". WorldCat. Online Computer Library Center. Retrieved 2017-03-29.  ^ "WorldCat.org WHOIS, DNS, & Domain Info - DomainTools". WHOIS. Retrieved 2017-01-21.  ^ a b "Inside WorldCat". Online Computer Library
Library
Center. Retrieved February 11, 2018.  ^ a b "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. 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). " WorldCat
WorldCat
Identities: Another View of the Catalog" (PDF). NextSpace. OCLC
OCLC
(6): 18–19. ISSN 1559-0011. Retrieved 18 January 2016.  ^ "Data strategy [WorldCat]". oclc.org. Retrieved 11 February 2018. 

Further reading[edit]

Blackman, Cathy; Moore, Erica Rae; Seikel, Michele; Smith, Mandi (July 2014). " WorldCat
WorldCat
and SkyRiver: a comparison of record quantity and fullness". Library
Library
Resources & Technical Services. 58 (3): 178–186. doi:10.5860/lrts.58n3.178.  Breeding, Marshall (May 2015). " Library
Library
services platforms: a maturing genre of products". Library
Library
Technology Reports. 51 (4): 1–38. doi:10.5860/ltr.51n4.  Matthews, Joseph R. (July 2016). "An environmental scan of OCLC alternatives: a management perspective". Public Library
Library
Quarterly. 35 (3): 175–187. doi:10.1080/01616846.2016.1210440.  McKenzie, Elizabeth (January 2012). OCLC
OCLC
changes its rules for use of records in WorldCat: library community pushback through blogs and cultures of resistance (Technical report). Boston: Suffolk University Law School. Research paper 12-06.  Wilson, Kristen (August 2016). "The knowledge base at the center of the universe". Library
Library
Technology Reports. 52 (6): 1–35. doi:10.5860/ltr.52n6. 

External links[edit]

Official website (Mobile) OCLC
OCLC
- "Web scale" discovery and delivery of library resources OCLC
OCLC
Bibliographic Formats and Standards WorldCat
WorldCat
Identities

Authority control

WorldCat
WorldCat
Identities VIAF: 176058852

.