relational database management systems, a unique key is a candidate key. All the candidate keys of a relation can uniquely identify the records of the relation...

unique attribute or combination of attributes from the table (a natural key) to act as its primary key, or create a new attribute containing a unique...

A Universally Unique Identifier (UUID) is a 128-bit label used for information in computer systems. The term Globally Unique Identifier (GUID) is also...

Unique Key Per Transaction (DUKPT) is a key management scheme in which for every transaction, a unique key is used which is derived from a fixed key....

A natural key (also known as business key or domain key) is a type of unique key in a database formed of attributes that exist and are used in the external...

numbers assigned to any rows where sort_key is the same. When sort_key is unique, each row will always get a unique row number. The RANK() OVER window function...

database design, a composite key is a candidate key that consists of two or more attributes, (table columns) that together uniquely identify an entity occurrence...

or set of locks that are keyed alike, a lock/key system where each similarly keyed lock requires the same, unique key. The key serves as a security token...

applications, see hash function or unique key This disambiguation page lists articles associated with the title Hash key. If an internal link led you here...

Look up key or Keys in Wiktionary, the free dictionary. Key, Keys, The Key or The Keys may refer to: Key (cryptography), a piece of information needed...