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Key may refer to:

Contents 1 Devices 2 Music 3 Computers 4 Geography 5 Artistry 6 Fiction 7 Literature 8 Surname 9 Other 10 See also

[edit] Devices

• Key (lock), a device used to open a lock
• Churchkey, various kinds of bottle and can openers
• Keychain, small chain that connects a small item to a keyring

[edit] Music

• Key (instrument), musical instruments have keys for tuning and keys for playing
• Key (music), a set of notes
• Key signature, in musical notation

[edit] Computers

• Key, button on a computer keyboard
• Candidate key, set of attributes of a relation variable in the relational model
• Primary key, field or group of fields in a database record that uniquely identify the record
• Foreign key, field or group of fields in a database record that point to a key field or group of fields forming a key of another database record
• Hash key, the index into a hash table
• Key (cryptography), a piece of information that controls the operation of an encryption algorithm
• Keying (graphics), compositing two full frame images together
• Keyword (computer programming), word or identifier that has a particular meaning to a programming language
• Keyword (internet search), one of the words used to find matching pages
• Keyword stuffing, unethical search engine optimization technique
• USB key, a computer storage device

[edit] Geography

• Cay, pronounced "key" and often spelled that way, a small, low island
• Florida Keys, an archipelago of about 1700 islands in the southeast United States

[edit] Artistry

• Black, in the CMYK color model
• Key frame, a frame made by an animator from which other frames are derived
• Key plate, a plate which printed the detail in an image

[edit] Fiction

• Key (comics), a DC Comics supervillain
• Keyblade, the main weapon of the main character of the Kingdom Hearts series

[edit] Literature

• Key (company), a Japanese visual novel studio
• Keyword (linguistics), word which occurs in a text more often than we would expect to occur by chance alone
• Keywords: A Vocabulary of Culture and Society, book written by the Welsh Marxist academic Raymond Williams
• The Keys to the Kingdom, a fantasy-adventure book series

[edit] Surname

For people named Key, see Key (surname).

[edit] Other

• House of Keys, the lower branch of the Isle of Man's Parliament
• Identification key, a method of deducing the correct species assignment of a living thing
• Key Bank, a bank headquartered in the Key Tower in Cleveland, Ohio
• Key Club, a worldwide student service organization
• Keying (vandalism), a type of vandalism involving paint scratching
• Telegraph key, the button used by a telegraph operator

[edit] See also

• Quay

ca:Clau

de:Schlüssel (Begriffsklärung) el:Κλειδί es:Clave fr:Clef it:Chiave nl:Sleutel ja:キー (曖昧さ回避) pl:Klucz pt:Chave (desambiguação) ru:Ключ