I fell on a dead link searching for "views" and clicking on the following
Views and the Rule System 
PostgreSQL Programmer's Guide Prev Chapter 8. The Postgres Rule
System Next views and the Rule System Implementation of views in Postgres
views in Postgres are implemented using the rule system. In fact there is
absolutely no difference between a CRE...
http://www.postgresql.org/docs/programmer/x968.htm (text/html) Thu, 03 Aug
2000 02:27:21 EST, 30807 bytes
Hope it helps...
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