What is Index?
{{wiktionary|index}} {{selfref|If you are looking for the main page of Wikipedia, see [[Main Page]].}} An '''index''' is a system used to make finding information easier. '''Index''' could also mean: * [[Index (publishing)]], a detailed list, usually arranged alphabetically, of the specific information in a publication * [[Index card]]s in a [[rolodex]] or old [[library catalog|card catalog]], early and mid 20th century technologies for maintaining such lists * [[Index (mathematics)]], for various meanings of the word in mathematics * [[Index (economics)]], a single number calculated from an array of prices and quantities. * [[Index, Washington]], a town in [[Snohomish County, Washington|Snohomish County]], [[Washington]], [[United States]]. * [[Index (typography)]], a largely obsolete punctuation mark In '''publications''': * ''[[Index Librorum Prohibitorum]]'', a list of publications which the Catholic Church censored * Germany's List of Media Harmful to Young People, colloquially known as ''The Index'', published by the [[Bundesprüfstelle für jugendgefährdende Medien]] * ''[[Index Magazine]]'', was a prominent [[New York City]] based publication for [[art]] and [[culture]]. * ''[[Truman State University Index]]'', the weekly [[newspaper]] distributed at [[Truman State University]] and throughout the [[Kirksville, Missouri|Kirksville]], [[Missouri]] community. * ''The Index'', the student newspaper of [[Kalamazoo College]], published since [[1877]]. * [[The Index (journal)]], a European propaganda journal created by [[Henry Hotze]] to support the [[Confederate States of America]] during the [[American Civil War]]. In '''computers and information retrieval''': * [[Index (database)]], a feature in a computerized database which allows quick access to the rows in a table * [[Index (information technology)]], in computer science, either an integer which identifies an array element, or a data structure which enables fast lookup * [[Index (search engine)]], for supporting information retrieval in search engines