Principles of database systems

By Jeffrey D. Ullman

Subjects: Gestion, Database management, Langages d'interrogation, Banques de données, Datenbanksystem, Distributed databases, Management, Databases, Bases de données réparties, Databanken, Banques de donnees, Bases de données relationnelles, Bases de donnees, Query languages (Computer science), Relational databases, Data base management, Bases de données

Description: 1. The material on optimization has been expanded, by including a discussion of the System R approach to optimization, tableau-based methods, and optimization in the distributed environment. 2. There is a discussion of universal relation systems, which are relational database systems that support a user view that looks like a single relation. 3. Concurrency control by "optimistic," or timestamp-based methods has been introduced. 4. Distributed systems are covered, both for optimization issues and concurrency control. 5. A discussion of data structures for range queries appears. 6. There is an introduction to generalized dependencies and their inference. The second edition was prepared using Don Knuth's TEX typesetting system.