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1. • • OCLC adds its own identifying number, the “OCN,” to each record entered into WorldCat. The OCN is unique to OCLC and allows the data to be sorted and queried by OCN, in addition to other criteria, such as date, title, or author.
     www.oclc.org › en › worldcat

     WorldCat - Delivering Quality | OCLC

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   What is WorldCat OCLC?

   • WorldCat is the world’s most comprehensive database of information about library collections. OCLC delivers quality, discoverability and value. Member libraries provide the foundation. Partners support WorldCat growth. WorldCat is filled with millions of popular and unique items.

   WorldCat: World’s most comprehensive database of library collections | …

   www.oclc.org/en/worldcat.html

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   What is WorldCat entities?

   • Funded in part by a grant from the Mellon Foundation, in partnership with an advisory group of 28 libraries, and built on OCLC’s decades of linked data research, WorldCat Entities represent a critical next step toward making linked data work for libraries.

   WorldCat Entities | OCLC

   www.oclc.org/en/worldcat/entities.html

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   What is a WorldCat ontology?

   • The WorldCat ontology is a data model that provides critical, authoritative information needed to describe library linked data. It’s designed to meet library workflow needs, create more and better connections between resources, and support library web visibility and partnerships.

   Linked data - The next evolution of library metadata | OCLC

   www.oclc.org/en/linked-data.html

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   How do I find a WorldCat entity?

   • Use the search box on entities.oclc.org to find and view WorldCat Entities for Persons, Places, Events, and Works. Browse through different languages and explore the way each entity links to other external vocabularies and authority files for further context.

   WorldCat Entities | OCLC

   www.oclc.org/en/worldcat/entities.html

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3. classify.oclc.org › classify2 › ClassifyDemoOCLC Classify -- an Experimental Classification Service

   classify.oclc.org › classify2 › ClassifyDemo

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   OCLC # OCLC assigns a unique number to each bibliographic record input into WorldCat. OCLC numbers vary in length. Enter an OCLC number without leading zeros. For example: 9111188; 35796477; 237005966; UPC. The Universal Product Code (UPC) is a barcode symbol that is used to track trade items in stores (e.g., audio and video products).

   • WorldCat: World’s most comprehensive database of ... - OCLC

     WorldCat is the world’s most comprehensive database of...

   • Linked data - The next evolution of library metadata | OCLC

     The WorldCat ontology is a data model that provides...

   • WorldCat ontology guidelines and standards - OCLC Support

     Discover details about the WorldCat ontology, including a...

4. help.oclc.org › FirstSearch_databases › WorldCatWorldCat - OCLC Support

   help.oclc.org › FirstSearch_databases › WorldCat

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   Apr 27, 2023 · This retrieves any record that has WorldCat-retained local holdings data. Also, when searching local holdings by 4-character local holding symbol (Use Attribute 6305), search as the 4-character symbol, space, and then the institution symbol.

   • Database name: WorldCat
   • Sources: OCLC member libraries

   • Short database name: OLUC

5. classify.oclc.org › classify2 › ClassifyDemoOCLC Classify -- an Experimental Classification Service

   classify.oclc.org › classify2 › ClassifyDemo

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   Classify is an OCLC Research prototype that helps you classify books, magazines, movies, and music using the Dewey Decimal Classification system or the Library of Congress Classification system.for books, DVDs, CDs, and other types of library materials.

6. www.oclc.org › en › worldcatWorldCat Entities | OCLC

   www.oclc.org › en › worldcat

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   Use the search box on entities.oclc.org to find and view WorldCat Entities for Persons, Places, Events, and Works. Browse through different languages and explore the way each entity links to other external vocabularies and authority files for further context.