Afrati, Foto. <br/><br/>
Answering Queries Using Views  [electronic resource] / 
by Foto Afrati, Rada Chirkova. 
 - 1st ed. 2018. 
 - IV, 235 p.  online resource. 
 - Synthesis Lectures on Data Management,  2153-5426 .
 - Synthesis Lectures on Data Management, .
<br/><br/>Preface -- Acknowledgments -- Queries and Views -- Query Containment and Equivalence -- Finding Equivalent Rewritings -- Maximally Contained Rewritings (MCRs) -- Answering Queries in Presence of Dependencies -- Answering Queries in Data Exchange -- Answering Queries Using Views -- Bibliographical Notes -- Conclusion -- Bibliography -- Authors' Biographies. 
<br/><br/> 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. 
<br/><br/><label>ISBN: </label>9783031018596 
<br/><br/><label>Standard No.: </label>10.1007/978-3-031-01859-6  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks .<br/>Data structures (Computer science).<br/>Information theory.<br/>Computer Communication Networks.<br/>Data Structures and Information Theory.
<br/><br/><label>LC Class. No.: </label>TK5105.5-5105.9 
<br/><br/><label>Dewey Class. No.: </label>004.6