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Answering Queries Using Views: Second Edition

Answering Queries Using Views: Second Edition

Paperback

Series: Synthesis Lectures on Data Management

DatabasesProgramming

Currently unavailable to order

ISBN10: 1681734621
ISBN13: 9781681734620
Publisher: Morgan & Claypool
Published: Apr 15 2019
Pages: 275
Weight: 1.06
Height: 0.58 Width: 7.52 Depth: 9.25
Language: English

The topic of using views to answer queries has been popular for a few decades now, as it cuts across domains such as query optimization, information integration, data warehousing, website design and, recently, database-as-a-service and data placement in cloud systems.

This book assembles foundational work on answering queries using views in a self-contained manner, with an effort to choose material that constitutes the backbone of the research. It presents efficient algorithms and covers the following problems: query containment; rewriting queries using views in various logical languages; equivalent rewritings and maximally contained rewritings; and computing certain answers in the data-integration and data-exchange settings. Query languages that are considered are fragments of SQL, in particular select-project-join queries, also called conjunctive queries (with or without arithmetic comparisons or negation), and aggregate SQL queries.

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