In SQL, a relation that is actually existent in the database is called a(n):

A.
Base relation

B.
Domain

C.
View

D.
Attribute

Explanation:
Abase relation exists in the database while a view is a virtual
relation that is not stored in the database. A view is derived by
the SQL definition and is developed from base relations or, possibly,
other views. An attribute, is a column in a relation table and

a domain is the set of permissible values of an attribute.