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...

In Western musical notation, a key signature is a set of sharp (♯), flat (♭), or rarely, natural (♮) symbols placed on the staff at the beginning of a...

(a natural key) to act as its primary key, or create a new attribute containing a unique ID that exists solely for this purpose (a surrogate key). Examples...

object in the database. The surrogate key is not derived from application data, unlike a natural (or business) key. There are at least two definitions of...

the natural key and Supplier_Key is a surrogate key. Technically, the surrogate key is not necessary, since the row will be unique by the natural key (Supplier_Code)...

a natural key as it is often composed of multiple natural key attributes. Composite keys use less disk space as compared to defining a surrogate key column...

C, and D. Its key signature has one sharp, on the F. Its relative major is G major and its parallel major is E major. The E natural minor scale is:...

The Windows key (also known as win, start, logo, flag or super key) is a keyboard key which was originally introduced on Microsoft's Natural Keyboard in...

sometimes called a "natural" key. If no natural key is suitable (think of the many people named Brown), an arbitrary or surrogate key can be assigned (such...

phylogenetics, a single-access key (also called dichotomous key, sequential key, analytical key, or pathway key) is an identification key where the sequence and...