In database management, an identifier for a record or group of records in a datafile.
— Computer ScienceIn encryption, authentication, and digital signatures, a value used in combination with an algorithm to encrypt or decrypt information.
— Computer ScienceOn a keyboard, the combination of a plastic keycap, a tension mechanism that suspends the keycap but allows it to be pressed down, and an electronic mechanism that records the key press and key release.
— Computer ScienceA piece of data that is required to unlock a packaged Windows Media file. This key is included in a separate license.
— Computer ScienceIn Registry Editor, a folder that appears in the left pane of the Registry Editor window. A key can contain subkeys and entries. For example, Environment is a key of HKEY_CURRENT_USER.
— Computer ScienceIn IP security (IPSec), a value used in combination with an algorithm to encrypt or decrypt data. Key settings for IPSec are configurable to provide greater security.
— Computer ScienceAn alpha, numeric, or alphanumeric value which uniquely identifies elements that are created and referenced as resources, and which exist within a ResourceDictionary.
— Computer ScienceA column or group of columns that uniquely identifies a row (primary key), defines the relationship between two tables (foreign key), or is used to build an index.
— Computer ScienceThe attribute of an entity type that specifies which property or set of properties is used to identify unique instances of the entity type.
— Computer ScienceIn cryptography, a key is a value that determines the output of an encryption algorithm when transforming plain text to encrypted text.
— Computer ScienceA piece of music is generally assigned a key. This defines how notes and chords used in that piece of music relate to each other to create moments of tension and resolution in the music.
— Guitar Learning