WorldCat Linked Data Vocabulary

WorldCat Linked Data uses a subset of terms from http://schema.org/ as its core vocabulary. The current list of used terms includes:

Classes:

• http://schema.org/Article
• http://schema.org/Book
• http://schema.org/CreativeWork
• http://schema.org/Enumeration
• http://schema.org/Event
• http://schema.org/Map
• http://schema.org/MusicRecording
• http://schema.org/Organization
• http://schema.org/Person
• http://schema.org/Place
• http://schema.org/Review
• http://schema.org/Thing

Schema.org Attributes (used with various classes):

• awards
• bookEdition
• contentRating
• copyrightYear
• datePublished
• description
• genre
• inLanguage
• isFamilyFriendly
• isbn
• name
• numberOfPages
• reviewBody

Schema.org Associations (used with various classes):

• about
• author
• bookFormat
• contributor
• creator
• illustrator
• itemReviewed
• publisher
• reviews
• url
  (Note: the intended use of the “url” property in Schema.org is unclear. In this data model, however, its use is reserved for cases where the WorldCat record describes a CreativeWork that is located on the Web at a specific URL.)

Schema.org Enumerations:

• http://schema.org/BookFormatType
  • http://schema.org/EBook

For situations involving authority control, these additional SKOS vocabulary terms were used:

• http://www.w3.org/2004/02/skos/core#Concept
• http://www.w3.org/2004/02/skos/core#inScheme

The combination of terms listed above covers many essentials that are relevant in bibliographic description, but there are some glaring gaps. The vocabulary defined at http://purl.org/library/ is designed to fill some of those gaps. The current list of extensions include:

Classes:

• http://purl.org/library/ArchiveMaterial
• http://purl.org/library/Carrier
• http://purl.org/library/ComputerFile
• http://purl.org/library/Game
• http://purl.org/library/Image
• http://purl.org/library/InteractiveMultimedia
• http://purl.org/library/Kit
• http://purl.org/library/MusicalScore
• http://purl.org/library/Newspaper
• http://purl.org/library/Periodical
• http://purl.org/library/Thesis
• http://purl.org/library/Toy
• http://purl.org/library/Video
• http://purl.org/library/VideoGame
• http://purl.org/library/VisualMaterial
• http://purl.org/library/WebSite

Attributes:

• http://purl.org/library/holdingsCount
• http://purl.org/library/oclcnum

Associations:

• http://purl.org/library/hasCarrier
• http://purl.org/library/placeOfPublication

Enumerations:

• http://schema.org/BookFormatType
  • http://purl.org/library/Audiobook
  • http://purl.org/library/BrailleBook
  • http://purl.org/library/ContinuallyUpdatedBook
  • http://purl.org/library/LargePrintBook
• http://purl.org/library/Carrier
  • http://purl.org/library/BlurayDisk
  • http://purl.org/library/CD
  • http://purl.org/library/CassetteTape
  • http://purl.org/library/DVD
  • http://purl.org/library/FilmReel
  • http://purl.org/library/LP
  • http://purl.org/library/Microform
  • http://purl.org/library/VHSTape
  • http://purl.org/library/Volume
  • http://purl.org/library/WWW

Although this “library” vocabulary was designed internally, OCLC looks forward to working with the library and Schema.org community to develop and/or replace this vocabulary as a community effort.