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Surrogate key. A surrogate key (or synthetic key, pseudokey, entity identifier, factless key, or technical key[citation needed]) in a database is a unique identifier for either an entity in the modeled world or an object in the database. The surrogate key is not derived from application data, unlike a natural (or business) key.
Their primary purpose is to present a comprehensive criminal history for a specific individual. Criminal records may be used for many purposes, including for background checks for purposes of employment, security clearance, adoption, immigration to the United States, and licensing. [3] Criminal records may be useful for identifying suspects ...
Primary key. In the relational model of databases, a primary key is a specific choice of a minimal set of attributes ( columns) that uniquely specify a tuple ( row) in a relation ( table ). [a] [1] Informally, a primary key is "which attributes identify a record," and in simple cases constitute a single attribute: a unique ID.
The terms "tabular key" and "matrix key" are best limited to a tabular presentation format of multi-access keys. The term "synoptic key" has an older definition, defining it as a key reflecting taxonomic classification and opposed to diagnostic keys arranged solely for the convenience of identification. History
Natural key. A natural key (also known as business key [1] or domain key [2]) is a type of unique key in a database formed of attributes that exist and are used in the external world outside the database (i.e. in the business domain or domain of discourse ). [3] In the relational model of data, a natural key is a superkey and is therefore a ...
Composite key. In database design, a composite key is a candidate key that consists of two or more attributes, [1] [2] [3] (table columns) that together uniquely identify an entity occurrence (table row). A compound key is a composite key for which each attribute that makes up the key is a foreign key in its own right. [citation needed]
It connects to key information that enables clear and unique identification of legal entities participating in financial transactions. Each LEI database entry contains information about an entity's ownership and thus answers the questions of 'who is who' and 'who owns whom'.
Unique identifier. A unique identifier ( UID) is an identifier that is guaranteed to be unique among all identifiers used for those objects and for a specific purpose. [1] The concept was formalized early in the development of computer science and information systems. In general, it was associated with an atomic data type .