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Το '''WorldCat''' isείναι aβιβλιογραφική [[unionβάση catalog]]δεδομένων thatκαι itemizesενοποιημένος theκατάλογος collectionsο ofοποίος περιέχει τις καταχωρήσεις των συλλογών 72,.000 [[libraryΒιβλιοθήκη|librariesβιβλιοθηκών]] inσε 170 countriesχώρες andκαι territoriesπεριοχές,<ref name="statistics">{{cite web
| url =http://www.oclc.org/worldcat/catalog.en.html
| title =A global library resource
| publisher =[[Online Computer Library Center]]
| accessdate =January 24, 2014
The}}</ref> οι οποίες είναι μέλη του οργανισμού [[OCLC ]], wasυπό createdτην inμέριμνα του οποίου λειτουργεί το WorldCat.<ref>{{cite web|url=http://www.worldcat.org/whatis/|title=What is WorldCat?|work=worldcat.org|accessdate=13 February 2015}}</ref>Ιδρύθηκε το 1967 ,<ref name="ourstory">{{cite web |url= http://www.oclc.org/en-US/about/story.html |title= Our Story |author=<!--Staff writer(s); no by-line.--> |date= 2014|website= oclc.org| accessdate=November 11, 2014}}</ref> the same year [[Fred Kilgour]] founded WorldCat,<ref>{{cite news |author=[[Margalit Fox]] |title=Frederick G. Kilgour, Innovative Librarian, Dies at 92 |url=http://www.nytimes.com/2006/08/02/us/02kilgour.html |quote=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. |work=[[The New York Times]] |date=August 2, 2006 |accessdate=2009-12-22 }}</ref> thoughαν theκαι firstοι catalogπρώτοι recordsκατάλογοι wereπροστέθηκαν added inτο 1971.<ref name="history">{{cite web |url= http://www.oclc.org/worldcat/catalog/timeline.en.html |title=A brief history of WorldCat|author=<!--Staff writer(s); no by-line.--> |date=February 10, 2015 |website= oclc.org| accessdate=February 13, 2014}}</ref> ItΠεριέχει containsπάνω more thanαπό 330 millionεκατομμύρια recordsεγγραφές, representingοι overοποίες συσχετίζονται με πάνω από 2 billionδισεκατομμύρια physicalφυσικά andκαι digitalψηφιακά assetsαντικείμενα inσε 485 languages, {{As of|2014|11|lc=on}}γλώσσες.<ref name="statistics" /> ItΗ isυπηρεσία theπροσφέρεται world'sδωρεάν largestστις [[Bibliography|bibliographic]]βιβλιοθήκες, database.ενώ OCLCαπό makesτο WorldCat2003 itselfένα availableυποσύνολο freeτων toδεδομένων librariesτου είναι διαθέσιμο και από εμπορικούς ιστότοπους και βιβλιοπωλεία, butενώ theαπό catalogτο is2006 theη foundationαναζήτηση forστην otherβάση subscribtionτου OCLCWorldCat servicesείναι (suchδυνατή asαπευθείας [[interlibraryαπό loanτον ιστότοπο του.<ref>{{Cite journal| resourceurl sharing]]= andhttp://www.oclc.org/content/dam/oclc/publications/newsletters/nextspace/nextspace_006.pdf|title collection= management)WorldCat Identities: Another View of the Catalog|last = Hickey|first = Thomas B. |date = 15 April 2007|journal = NextSpace|doi = |pmid = |access-date = 18 January 2016|publisher = OCLC|issue = 6|pages = 18-19|issn = 1559-0011}}</ref>▼}}</ref> that participate in the [[Online Computer Library Center]] (OCLC) global cooperative. It is operated by OCLC Online Computer Library Center, Inc.<ref>{{cite web|url=http://www.worldcat.org/whatis/|title=What is WorldCat?|work=worldcat.org|accessdate=13 February 2015}}</ref> The subscribing member libraries collectively maintain WorldCat's [[database]].
==History==
▲The OCLC was created in 1967,<ref name="ourstory">{{cite web |url= http://www.oclc.org/en-US/about/story.html |title= Our Story |author=<!--Staff writer(s); no by-line.--> |date= 2014|website= oclc.org| accessdate=November 11, 2014}}</ref> the same year [[Fred Kilgour]] founded WorldCat,<ref>{{cite news |author=[[Margalit Fox]] |title=Frederick G. Kilgour, Innovative Librarian, Dies at 92 |url=http://www.nytimes.com/2006/08/02/us/02kilgour.html |quote=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. |work=[[The New York Times]] |date=August 2, 2006 |accessdate=2009-12-22 }}</ref> though the first catalog records were added in 1971.<ref name="history">{{cite web |url= http://www.oclc.org/worldcat/catalog/timeline.en.html |title=A brief history of WorldCat|author=<!--Staff writer(s); no by-line.--> |date=February 10, 2015 |website= oclc.org| accessdate=February 13, 2014}}</ref> It contains more than 330 million records, representing over 2 billion physical and digital assets in 485 languages, {{As of|2014|11|lc=on}}.<ref name="statistics"/> It is the world's largest [[Bibliography|bibliographic]] database. OCLC makes WorldCat itself available free to libraries, but the catalog is the foundation for other subscribtion OCLC services (such as [[interlibrary loan|resource sharing]] and collection management).
In 2003, OCLC began the "Open WorldCat" pilot program, making abbreviated records from a subset of 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 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.<ref>{{Cite journal|url = http://www.oclc.org/content/dam/oclc/publications/newsletters/nextspace/nextspace_006.pdf|title = WorldCat Identities: Another View of the Catalog|last = Hickey|first = Thomas B.|date = 15 April 2007|journal = NextSpace|doi = |pmid = |access-date = 18 January 2016|publisher = OCLC|issue = 6|pages = 18-19|issn = 1559-0011}}</ref>
== Παραπομπές ==
[[Κατηγορία:Βάσεις δεδομένων]]
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