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Relation

3:39

Young Thug - Relationship (feat. Future) [Official Music Video]

3:12

What is a Relation? | Don't Memorise

3:31

Relation - Nikk Ft Mahira Sharma

3:36

Sech - Relación (Letra/Lyrics)

3:08

Sech - Relación (Video Oficial)

In relational database theory, a relation, as originally defined by E. F. Codd, is a set of tuples (d1, d2, ..., dn), where each element dj is a member of Dj, a data domain. Codd's original definition notwithstanding, and contrary to the usual definition in mathematics, there is no ordering to the elements of the tuples of a relation. Instead, each element is termed an attribute value. An attribute is a name paired with a domain. An attribute value is an attribute name paired with an element of that attribute's domain, and a tuple is a set of attribute values in which no two distinct elements have the same name. Thus, in some accounts, a tuple is described as a function, mapping names to values.