Cross-reference  

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Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.
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Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.

The term cross-reference can refer to either:

  • An instance within a document which refers to related information elsewhere in the same document. In both printed and online dictionaries cross-references are important because they form a network structure of relations existing between different parts of data, dictionary-internal as well as dictionary external.
  • In an index, a cross reference is often denoted by See also. For example, under the term Albert Einstein in the index of a book about Nobel Laureates, there may be the cross-reference See also: Einstein, Albert.
  • In hypertext, cross-referencing is maintained to a document with either in-context (XRIC) or out-of-context (XROC) cross-referencing. These are similar to KWIC and KWOC.
  • In programming, "cross-referencing" means a listing of every named identifier.
  • In a relational database management system, a table can have an xref as prefix or suffix to indicate it is a cross-reference table that joins two or more tables together via primary key.


See also




Unless indicated otherwise, the text in this article is either based on Wikipedia article "Cross-reference" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on original research by Jahsonic and friends. See Art and Popular Culture's copyright notice.

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