Views certainly help in managing complexity. They do nothing to improve query-speed.
Querying a view gets rewritten to queries to the underlying tables on the fly. (as long as there are no materialized views, which are still on a the TODO list)
-- GHUM Harald Massa persuadere et programmare Harald Armin Massa Reinsburgstraße 202b 70197 Stuttgart 0173/9409607 - Let's set so double the killer delete select all.