Inheritance and views

 Hello.

 I'd like to implement for my DB a mechanism of backup based in inherited
 tables. I explain it in detail:

 Idea is simple: table B inherits from table A. Anualy, data from table A is
 dumped in B. So, from frontend it is posible to access current data (from
 A) or all data (A + B).

 Problem is that I'd like also implement a view for A and B, but I don't
 know what is best way. View(s) must have rules for insert and update. Can
 view from A access data from B without problem (eliminating "ONLY" from
 select)?. Is there another better form of implementing this backup
 mechanism?. I'd not want to reinvent the wheel ;)

 Thanks for your ideas.

                                                 David