Assume a variant of '''Tutorial D''' in which targets for update can be relational expressions, not merely relvar names. Then a view name (virtual relvar) is to be a shorthand for its defining expression. We're already doing that in read contexts. Do so also  in update target contexts.

Assume a variant of '''Tutorial D''' in which targets for update can be relational expressions, not merely relvar names. Then a view name (virtual relvar) is to be a shorthand for its defining expression. We're already doing that in read contexts. Do so also  in update target contexts.