Polymorphism in SQL database tables?

Question

I currently have multiple tables in my database which consist of the same \'basic fields\' like:

name character varying(100),
description text,
url character         


        

Answer 1

Using the disjoint subtype approach suggested by Bill Karwin, how would you do INSERTs and UPDATEs without having to do it in two steps?

Getting data, I can introduce a View that joins and selects based on specific media_type but AFAIK I cant update or insert into that view because it affects multiple tables (I am talking MS SQL Server here). Can this be done without doing two operations - and without a stored procedure, natually.

Thanks