You can create a view derived from more than one base table. Here is an example of a view derived from both the authors and the publishers tables. The view contains the names and cities of the authors that live in the same city as a publisher, along with each publisher’s name and city.
create view cities (authorname, acity, publishername, pcity) as select au_lname, authors.city, pub_name, publishers.city from authors, publishers where authors.city = publishers.city
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