Recomienda este artículo a tus amigos:
Answering Queries Using Views Foto Afrati
Answering Queries Using Views
Foto Afrati
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.
| Medios de comunicación | Libros Paperback Book (Libro con tapa blanda y lomo encolado) |
| Publicado | 15 de abril de 2019 |
| ISBN13 | 9781681734620 |
| Editores | Morgan & Claypool Publishers |
| Páginas | 275 |
| Dimensiones | 191 × 235 × 15 mm · 480 g |
| Lengua | Inglés |
Mas por Foto Afrati
Mostrar todoMere med samme udgiver
Más de esta serie
Ver todo de Foto Afrati ( Ej. Paperback Book y Hardcover Book )