Aleksey, you don't have to explicitly open the underlying tables but they're opened automatically as soon as you use the local view.
Do you have a copy of xcase? Check it out- it allows you to move tables/views easily between local tables,SQL server, Oracle, Mysql... a great tool.
www.xcase.com .
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1