This second edition relies on the same successful approach that distinguished the first: it covers the principles of database theory with unmatched thoroughness, and it rigorously links theory to the real world of database programming and administration. A careful discussion of SQL standards and a multitude of examples drawn from actual databases-Oracle, DB2, and Informix-complements the authors' concept-oriented instruction, allowing you to develop product-specific understanding and to learn the important differences between the SQL dialects that will enable you to write portable applications.

* Focuses extensively on the object-relational model that is rapidly gaining acceptance and revolutionizing the database industry. Collection types and UDF's are thoroughly covered.
* Introduces new relational features of SQL taken from the latest versions of today's most popular database products, Oracle, DB2, and Informix.
* Offers thorough coverage of the SQL-99 standard, including additions designed to help you take full advantage of the object-relational model.
* Provides expanded programming examples intended to improve your understanding of transaction processing and error handling.
* Explains clearly the principles of logical database design, including those relating to the E-R model and normalization, with a number of new illustrations and examples.
* Presents the latest indexing and query processing techniques, such as bitmap indexing, and shows how to use them to achieve significant performance improvements.

About the Authors

Patrick O'Neil is a professor of computer science at the University of Massachusetts at Boston. He is responsible for a number of important research results in transactional performance and disk access algorithms, and he holds patents for his work in these and other database areas. Author of "The Set Query Benchmark" (in The Benchmark Handbook for Database and Transaction Processing Systems, also from Morgan Kaufmann) and an area editor for Information Systems, O'Neil is also an active industry consultant who has worked with a number of prominent companies, including Microsoft, Oracle, Sybase, Informix, Praxis, Price Waterhouse, and Policy Management Systems Corporation.

Elizabeth O'Neil is also a professor of computer science at the University of Massachusetts at Boston. She serves as a consultant to Sybase IQ in Concord, Massachusetts, and has worked with a number of other corporations, including Microsoft and Bolt, Beranek, and Newman. From 1980 to 1998 she implemented and managed new hardware and software labs in the Computer Science Department of the University of Massachusetts at Boston.

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