{"product_id":"answering-queries-using-views-second-edition-9783031007439","title":"Answering Queries Using Views, Second Edition","description":"\u003cp\u003e • Author(s): Foto Afrati\u003cbr\u003e • Publisher: Springer\u003cbr\u003e • Publisher Imprint: Springer\u003cbr\u003e • BISAC: Information Theory\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e \u003cp\u003eThis 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. \u003c\/p\u003e \u003cp\u003eThis second edition includes twonew 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.\u003c\/p\u003e","brand":"Springer","offers":[{"title":"Paperback","offer_id":45282921545879,"sku":"9783031007439","price":5821.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3471\/1191\/files\/9783031007439.webp?v=1769303566","url":"https:\/\/atlanticbooks.com\/products\/answering-queries-using-views-second-edition-9783031007439","provider":"Atlantic Books","version":"1.0","type":"link"}