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 global cooperative. It is operated by Inc.. The subscribing member libraries collectively maintain WorldCat's database, the world's largest bibliographic database. OCLC makes WorldCat itself available free to libraries, but the catalog is the foundation for other subscription OCLC services. OCLC was founded in 1967 under the leadership of Fred Kilgour; that same year, OCLC began to develop the union catalog technology that would evolve into WorldCat. 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.
In December 2017, WorldCat contained over 400 million bibliographic records in 491 languages, representing over 2.6 billion physical and digital library assets, the WorldCat persons dataset included over 100 million people. 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 borrowed, undergoing restoration or repair, or moved to storage not directly accessible to patrons. Furthermore, 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 online public access catalog with its own distinctive user interface design, until they can locate a catalog entry that shows the item is available at a particular library. Copac Faceted Application of Subject Terminology Library and Archives Canada Open Library Research Libraries UK Blackman, Cathy. "WorldCat and SkyRiver: a comparison of record quantity and fullness". Library Resources & Technical Services. 58: 178–186. Doi:10.5860/lrts.58n3.178. Breeding, Marshall. "Library services platforms: a maturing genre of products". Library Technology Reports. 51: 1–38. Doi:10.5860/ltr.51n4. Matthews, Joseph R.. "An environmental scan of OCLC alternatives: a management perspective". Public Library Quarterly. 35: 175–187. Doi:10.1080/01616846.2016.1210440. McKenzie, Elizabeth. OCLC changes its rules for use of records in WorldCat: library community pushback through blogs and cultures of resistance. Boston: Suffolk University Law School.
Research paper 12-06. What the OCLC online union catalog means to me: a collection of essays. Dublin, Ohio: OCLC. 1997. ISBN 1556532237. OCLC 37492023. Wilson, Kristen. "The knowledge base at the center of the universe". Library Technology Reports. 52: 1–35. Doi:10.5860/ltr.52n6. "WorldCat data licensing". Oclc.org. Retrieved 2018-12-31. See also: "Data licenses & attribution". Oclc.org. Retrieved 2018-12-31. Information about licensing of WorldCat records and some other OCLC data. Official website "WorldCat". Oclc.org. Retrieved 2018-12-31. Information on the OCLC website about WorldCat. "Bibliographic Formats and Standards". Oclc.org. Retrieved 2018-12-31. "WorldCat Identities". Worldcat.org. Retrieved 2018-12-31
International Standard Book Number
The International Standard Book Number is a numeric commercial book identifier, intended to be unique. Publishers purchase ISBNs from an affiliate of the International ISBN Agency. An ISBN is assigned to each variation of a book. For example, an e-book, a paperback and a hardcover edition of the same book would each have a different ISBN; the ISBN is 13 digits long if assigned on or after 1 January 2007, 10 digits long if assigned before 2007. The method of assigning an ISBN is nation-based and varies from country to country depending on how large the publishing industry is within a country; the initial ISBN identification format was devised in 1967, based upon the 9-digit Standard Book Numbering created in 1966. The 10-digit ISBN format was developed by the International Organization for Standardization and was published in 1970 as international standard ISO 2108. Published books sometimes appear without an ISBN; the International ISBN agency sometimes assigns such books ISBNs on its own initiative.
Another identifier, the International Standard Serial Number, identifies periodical publications such as magazines and newspapers. The International Standard Music Number covers musical scores; the Standard Book Numbering code is a 9-digit commercial book identifier system created by Gordon Foster, Emeritus Professor of Statistics at Trinity College, for the booksellers and stationers WHSmith and others in 1965. The ISBN identification format was conceived in 1967 in the United Kingdom by David Whitaker and in 1968 in the United States by Emery Koltay; the 10-digit ISBN format was developed by the International Organization for Standardization and was published in 1970 as international standard ISO 2108. The United Kingdom continued to use the 9-digit SBN code until 1974. ISO has appointed the International ISBN Agency as the registration authority for ISBN worldwide and the ISBN Standard is developed under the control of ISO Technical Committee 46/Subcommittee 9 TC 46/SC 9; the ISO on-line facility only refers back to 1978.
An SBN may be converted to an ISBN by prefixing the digit "0". For example, the second edition of Mr. J. G. Reeder Returns, published by Hodder in 1965, has "SBN 340 01381 8" – 340 indicating the publisher, 01381 their serial number, 8 being the check digit; this can be converted to ISBN 0-340-01381-8. Since 1 January 2007, ISBNs have contained 13 digits, a format, compatible with "Bookland" European Article Number EAN-13s. An ISBN is assigned to each variation of a book. For example, an ebook, a paperback, a hardcover edition of the same book would each have a different ISBN; the ISBN is 13 digits long if assigned on or after 1 January 2007, 10 digits long if assigned before 2007. An International Standard Book Number consists of 4 parts or 5 parts: for a 13-digit ISBN, a prefix element – a GS1 prefix: so far 978 or 979 have been made available by GS1, the registration group element, the registrant element, the publication element, a checksum character or check digit. A 13-digit ISBN can be separated into its parts, when this is done it is customary to separate the parts with hyphens or spaces.
Separating the parts of a 10-digit ISBN is done with either hyphens or spaces. Figuring out how to separate a given ISBN is complicated, because most of the parts do not use a fixed number of digits. ISBN is most used among others special identifiers to describe references in Wikipedia and can help to find the same sources with different description in various language versions. ISBN issuance is country-specific, in that ISBNs are issued by the ISBN registration agency, responsible for that country or territory regardless of the publication language; the ranges of ISBNs assigned to any particular country are based on the publishing profile of the country concerned, so the ranges will vary depending on the number of books and the number and size of publishers that are active. Some ISBN registration agencies are based in national libraries or within ministries of culture and thus may receive direct funding from government to support their services. In other cases, the ISBN registration service is provided by organisations such as bibliographic data providers that are not government funded.
A full directory of ISBN agencies is available on the International ISBN Agency website. Partial listing: Australia: the commercial library services agency Thorpe-Bowker.
Fantasy is a genre of speculative fiction set in a fictional universe inspired by real world myth and folklore. Its roots are in oral traditions, which became literature and drama. From the twentieth century it has expanded further into various media, including film, graphic novels and video games. Fantasy is distinguished from the genres of science fiction and horror by the absence of scientific or macabre themes though these genres overlap. In popular culture, the fantasy genre is predominantly of the medievalist form. In its broadest sense, fantasy consists of works by many writers, artists and musicians from ancient myths and legends to many recent and popular works. Most fantasy uses other supernatural elements as a main plot element, theme, or setting. Magic and magical creatures are common in many of these worlds. An identifying trait of fantasy is the author's reliance on imagination to create narrative elements that do not have to rely on history or nature to be coherent; this differs from realistic fiction in that realistic fiction has to attend to the history and natural laws of reality, where fantasy does not.
An author applies his or her imagination to come up with characters and settings that are impossible in reality. Many fantasy authors use real-world mythology as inspiration. For instance, a narrative that takes place in an imagined town in the northeastern United States could be considered realistic fiction as long as the plot and characters are consistent with the history of a region and the natural characteristics that someone, to the northeastern United States expects. Fantasy has been compared to science fiction and horror because they are the major categories of speculative fiction. Fantasy is distinguished from science fiction by the plausibility of the narrative elements. A science fiction narrative is unlikely, though possible through logical scientific or technological extrapolation, where fantasy narratives do not need to be scientifically possible. Authors have to rely on the readers' suspension of disbelief, an acceptance of the unbelievable or impossible for the sake of enjoyment, in order to write effective fantasies.
Despite both genres' heavy reliance on the supernatural and horror are distinguishable. Horror evokes fear through the protagonists' weaknesses or inability to deal with the antagonists. Elements of the supernatural and the fantastic were a part of literature from its beginning. Fantasy elements occur throughout the ancient Akkadian Epic of Gilgamesh; the ancient Babylonian creation epic, the Enûma Eliš, in which the god Marduk slays the goddess Tiamat, contains the theme of a cosmic battle between good and evil, characteristic of the modern fantasy genre. Genres of romantic and fantasy literature existed in ancient Egypt; the Tales of the Court of King Khufu, preserved in the Westcar Papyrus and was written in the middle of the second half of the eighteenth century BC, preserves a mixture of stories with elements of historical fiction and satire. Egyptian funerary texts preserve mythological tales, the most significant of which are the myths of Osiris and his son Horus. Folk tales with fantastic elements intended for adults were a major genre of ancient Greek literature.
The comedies of Aristophanes are filled with fantastic elements his play The Birds, in which an Athenian man builds a city in the clouds with the birds and challenges Zeus's authority. Ovid's Metamorphoses and Apuleius's The Golden Ass are both works that influenced the development of the fantasy genre by taking mythic elements and weaving them into personal accounts. Both works involve complex narratives in which humans beings are transformed into animals or inanimate objects. Platonic teachings and early Christian theology are major influences on the modern fantasy genre. Plato used allegories to convey many of his teachings, early Christian writers interpreted both the Old and New Testaments as employing parables to relay spiritual truths; this ability to find meaning in a story, not true became the foundation that allowed the modern fantasy genre to develop. The most well known fiction from the Islamic world was The Book of One Thousand and One Nights, a compilation of many ancient and medieval folk tales.
Various characters from this epic have become cultural icons in Western culture, such as Aladdin and Ali Baba. Hindu mythology was an evolution of the earlier Vedic mythology and had many more fantastical stories and characters in the Indian epics; the Panchatantra, for example, used various animal fables and magical tales to illustrate the central Indian principles of political science. Chinese traditions have been influential in the vein of fantasy known as Chinoiserie, including such writers as Ernest Bramah and Barry Hughart. Beowulf is among the best known of the Nordic tales in the English speaking world, has had deep influence on the fantasy genre. Norse mythology, as found in the Elder Edda and the Younger Edda, includes such figures as Odin and his fellow Aesir, dwarves, elves and giants; these elements have been directly imported into various fantasy works. The separate folklore of Ireland and Scotland has sometimes been us