Key
(1) A button on a keyboard.
(2) In database management systems, a key is a field that you use to sort data. It can also be called a key field , sort key, index, or key word. For example, if you sort records by age, then the age field is a key. Most database management systems allow you to have more than one key so that you can sort records in different ways. One of the keys is designated the primary key, and must hold a unique value for each record. A key field that identifies records in a different table is called a foreign key.
(3) A passwordor table needed to decipher encoded data.
(4) See memory keys.
Read Also:
- key effect
In video editing, a key effect is used to remove a color or background from a video clip or an image to see the image or video behind it. Also called color key out.
- key escrow
(kē es´krō) (n.) A data security measure in which a cryptographic key is entrusted to a third party (i.e., kept in escrow). Under normal circumstances, the key is not released to someone other than the sender or receiver without proper authorization. Key escrow systems can be considered a security risk at the user puts access […]
- Key Fob
A fob, or more commonly called a key fob, is a small security hardware device with built-in authentication used to control and secure access to network services and data. The key fob displays a randomly generated access code, which changes periodically, usually every 30 to 60 seconds. A user first authenticates themselves on the key […]
- key length
The number of binary digits, or bits, in an encryption algorithm��s key. Key length is sometimes used to measure the relative strength of the encryption algorithm (i.e., the longer the key length, the more difficult the key is to decode).
- Keyboard
A keyboard is the set of typewriter-like keys that enables you to enter data into a computer and other devices. Computer keyboards are similar to electric-typewriter keyboards but contain additional keys. The keys typically found on computer keyboards are often classified as follows: Alphanumeric keys: The letters and numbers on the keyboard. Punctuation keys: The […]