Answering queries using views:

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 foundation...

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Hauptverfasser: Afrati, Foto N. (VerfasserIn), Chirkova, Rada (VerfasserIn)
Format: Elektronisch E-Book
Sprache:English
Veröffentlicht: [San Rafael, California] Morgan & Claypool Publishers [2018]
Schriftenreihe:Synthesis lectures on data management #46
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Online-Zugang:Volltext
Zusammenfassung: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
Beschreibung:Part of: Synthesis digital library of engineering and computer science
Title from PDF title page (viewed on December 12, 2017)
Beschreibung:1 Online-Resource (xix, 215 Seiten) Illustrationen
ISBN:9781681730325
DOI:10.1007/978-3-031-01859-6https://doi.org/10.1007/978-3-031-01859-6