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...
4 KB (630 words) - 06:43, 15 May 2024
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...
34 KB (3,526 words) - 09:02, 30 August 2024
(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...
7 KB (885 words) - 11:30, 7 August 2024
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...
18 KB (2,344 words) - 16:31, 8 August 2024
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)...
21 KB (2,415 words) - 23:04, 1 August 2024
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...
5 KB (677 words) - 08:13, 4 June 2024
E minor (redirect from Key of E minor)
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:...
8 KB (615 words) - 23:09, 25 July 2024
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...
24 KB (2,814 words) - 20:08, 28 August 2024
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...
21 KB (2,959 words) - 17:09, 6 August 2024
phylogenetics, a single-access key (also called dichotomous key, sequential key, analytical key, or pathway key) is an identification key where the sequence and...
11 KB (1,204 words) - 13:02, 26 April 2023