This title is based on an earlier book by the same authors, Foundations for Future Database Systems: The Third Manifesto. It is on database management, and is organized around a proposal for a foundation for data and database management systems (DBMSs). It can be seen as an abstract blueprint for the design of a DBMS and the language interface to such a DBMS. In particular, it serves as a basis for a model of type inheritance.

The authors combine precision and thoroughness of exposition with the approachability that readers familiar with their previous publications will recognize and welcome. This book is essential reading for database students and professionals alike.

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C. J. Date is an independent author, lecturer, researcher, and consultant specializing in relational database systems. An active member of the database community for over 30 years, Date has devoted the major part of his career to exploring, expanding, and expounding the theory and practice of relational technology. He was also involved in technical planning for the IBN products SQL/DS and DB2 and his book, An Introduction to Database Systems, has sold well over half a million copies worldwide.

Hugh Darwen has been involved in software development since 1967 as an employee of IBM United Kingdom Ltd. He has been active in the relational database arena since 1978. His writings include contributions to Date’s Relational Database Writings series and A Guide to the SQL Standard. He has been an active participant in the development of the SQL international standards since 1988.

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