Answering Queries Using Views Second Edition is popular PDF and ePub book, written by Foto Afrati in 2022-05-31, it is a fantastic choice for those who relish reading online the Computers genre. Let's immerse ourselves in this engaging Computers book by exploring the summary and details provided below. Remember, Answering Queries Using Views Second Edition can be Read Online from any device for your convenience.
Answering Queries Using Views Second Edition Book PDF Summary
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. This second edition includes two new chapters that refer to tree-like data and respective query languages. Chapter 8 presents the data model for XML documents and the XPath query language, and Chapter 9 provides a theoretical presentation of tree-like data model and query language where the tuples of a relation share a tree-structured schema for that relation and the query language is a dialect of SQL with evaluation techniques appropriately modified to fit the richer schema.
Detail Book of Answering Queries Using Views Second Edition PDF
- Author : Foto Afrati
- Release : 31 May 2022
- Publisher : Springer Nature
- ISBN : 9783031018718
- Genre : Computers
- Total Page : 253 pages
- Language : English
- PDF File Size : 18,5 Mb
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