Noun
relvar (plural relvars)
English Wikipedia has an article on:relvarWikipedia
(databases, nonstandard) A variable that contains a relation, as distinguished from the relation itself.
Additionally the Order relvar contains an Invoice No attribute, implying that each Order has a corresponding Invoice. Source: Internet
A database relvar (relation variable) is commonly known as a base table. Source: Internet
A relvar is a named variable of some specific relation type, to which at all times some relation of that type is assigned, though the relation may contain zero tuples. Source: Internet
The relational model requires updates to a view to have the same effect as if the view were a base relvar. Source: Internet