About the Book: View Updating and Relational Theory: Solving the View Update
Problem
Views are virtual tables. That means they should be updatable, just as "real" or
base tables are. In fact, view updatability isnt just desirable, its crucial,
for practical reasons as well as theoretical ones. But view updating has always
been a controversial topic. Ever since the relational model first appeared,
there has been widespread skepticism as to whether (in general) view updating is
even possible.
In stark contrast to this conventional wisdom, this book shows how views, just
like base tables, can always be updated (so long as the updates dont violate any
integrity constraints).