Key
Appearance
Key or The Key may refer to:
Common meanings
- Key (cryptography), a piece of information that controls the operation of a cryptography algorithm
- Key (lock), device used to control access to places or facilities restricted by a lock
- Key (map), a guide to a map's symbology
- Key, on a typewriter or computer keyboard
- Answer key, a list of answers to a test
Geography
- Cay, also spelled key, a small, low-elevation, sandy island formed on the surface of a coral reef
United States
- Key, Alabama
- Key, Ohio
- Key, West Virginia
- Keys, Oklahoma
- Florida Keys, an archipelago of about 1,700 islands in the southeast United States
Elsewhere
- Key, Iran, a village in Isfahan Province, Iran
- Key Island, Tasmania, Australia
Arts and media
Films
- The Key (1934 film), a 1934 film directed by Michael Curtiz
- The Key (1958 film), a war film directed by Carol Reed, starring William Holden and Sophia Loren
- The Key, also known as Odd Obsession, a 1959 Japanese film directed by Kon Ichikawa
- The Key (1961 film), a Soviet animated feature
- The Key (1965 film), a Yugoslav omnibus film
- The Key (1971 film), a Czechoslovakian drama
- The Key (1983 film), an Italian erotic film directed by Tinto Brass, starring Stefania Sandrelli
- Kelid (The Key), a 1987 Iranian film written by Abbas Kiarostami
- The Key (2007 film), a French thriller film directed by Guillaume Nicloux
- Key (film), a 2011 film
- The Key (2014 film), an American film directed by Jefery Levy
Literature
- The Key (comics), a supervillain in the DC Comics universe
- The Key (Curley novel), by Marianne Curley
- The Key (Elfgren and Strandberg novel), by Mats Strandberg and Sara Bergmark Elfgren
- The Key (Tanizaki novel), by Jun'ichirō Tanizaki
- "The Key" (short story), a 1966 short story by Isaac Asimov
- The Key, a 1969 book of etymology by John Philip Cohane
Music
- Key (music), the scale of a piece of music
- Key (instrument), part of a musical instrument used for playing or tuning
- Keys, short for keyboard instruments
Albums
- Key (Meredith Monk album), 1971
- Key (Son, Ambulance album), 2004
- The Key (Joan Armatrading album), 1983
- The Key (Vince Gill album), 1998
- The Key (Nocturnus album), 1990
- The Key (Operation: Mindcrime album), 2015
Songs
- "The Key" (Speech Debelle song), 2009
- "The Key" (Ou Est Le Swimming Pool song), 2010
- "Key", a song from the album Maid in Japan by Band-Maid
- "The Key", a song by Edita Abdieski
- "Key", a song from the album Minecraft – Volume Alpha by C418
Television
- "The Key" (Code Lyoko episode), 2005
- "The Key" (Prison Break episode), 2006
- "The Key" (The Walking Dead), 2018
- "The Key" (Yes, Prime Minister), 1986
- "The Keys" (Seinfeld), a 1992 TV episode
Other uses in arts and media
- Kirby's Epic Yarn (KEY), a 2010 game by Nintendo
- Key, the title character of Key the Metal Idol, a Japanese anime OVA series
- The Key, a painting by Jackson Pollock
- The Key, a magazine published by Kappa Kappa Gamma
People
- Key (entertainer) (born 1991), South Korean entertainer
- Key (surname)
- Keys (surname)
Sports
- Key (basketball), a restricted area around the basketball net
- Frederick Keys, a Double-A minor league baseball team
Technology
- Key (computing), a field in a computer file or database used to uniquely identify[1][2][3][4][5] records for retrieval, sorting or joining with other records
- Key (engineering), a type of coupling used to transmit rotation between a shaft and an attached item
- KeY, a software verification tool
- The Key (smartcard), a contactless smartcard for public transport ticketing in Britain
- .key, file extension used by Keynote
- Identification key, used to identify biological entities
- Telegraph key, the button used by a telegraph operator
Other uses
- Key (company), a Japanese visual novel studio
- The Key School, an independent coeducational school in Annapolis, Maryland
- Keys, a truce term used in western Scotland
- Amazon Key, a service by Amazon allowing customers to get deliveries inside of their home or car
- House of Keys, the directly elected lower branch of Tynwald, the parliament of the Isle of Man
- Samara (fruit) or key, a type of fruit
See also
- All pages with titles beginning with Key
- All pages with titles containing Key
- Keay, a surname
- Keyes (disambiguation)
- Keying (disambiguation)
- Quay (disambiguation)
- Qi (disambiguation)
- The Keys (disambiguation)
References
- ^ Jeffrey D. Ullman. Principles of Database Systems, Second Edition. Computer Science Press. 1982. Page 13: "An attribute or set of attributes whose values uniquely identify each entity in an entity set is called a key."
- ^ Shamkant B. Navathe and Ramez Elmasri. Fundamentals of Database Systems. Benjamin/Cummings Publishing Company. 1989. Page 43: "An important constraint on the entities of an entity type is the key or uniqueness constraint on attributes."
- ^ BBC, Bitesize, Computer Science. Types of keys (Web page). https://www.bbc.co.uk/bitesize/guides/z4wf8xs/revision/4 "In a relational database, keys ensure that any record in a table can be uniquely identified by one field or a combination of fields in the table." Retrieved 07-Feb-2021.
- ^ Encyclopedia, PC Magazine. Key field (Web page). https://www.pcmag.com/encyclopedia/term/key-field "A field in a record that holds unique data which identifies that record from all the other records in the file or database. Account number, product code and customer name are typical key fields. As an identifier, each key value must be unique in each record." Retrieved 07-Feb-2021.
- ^ Awad, Elias (1985), Systems Analysis and Design, Second Edition, Richard D. Irwin, Inc., ISBN 0-256-02824-9 "A key is a unique identifier".