Principles of database systems

By Jeffrey D. Ullman

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

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.