ISBN 9789351100454,View Updating And Relational Theory : Solving The View Update Problem

View Updating And Relational Theory : Solving The View Update Problem

Author:

C. J. Date

Publisher:

Shroff Publishers

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ISBN 9789351100454
Publisher

Shroff Publishers

Publication Year 2013
ISBN-13

ISBN 9789351100454

ISBN-10 9351100456
Binding

Paperback

Number of Pages 280 Pages
Language (English)
Subject

Computer programming

Views are virtual tables. That means they should be updatable, just as real or base tables are. In fact, view updatability isn't just desirable, it's 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 don't violate any integrity constraints). More generally, it shows how updating always ought to work, regardless of whether the target is a base table or a view. The proposed scheme is 100% consistent with the relational model but rather different from the way updating works in SQL products today.

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