Databases, Types and the Relational Model

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9780321399427: Databases, Types and the Relational Model

Book by Date C J Darwen Hugh

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Quatrième de couverture :

Databases

 

Databases, Types, and the Relational Model: The Third Manifesto

C. J. Date

Hugh Darwen

 

Databases, Types, and the Relational Model: The Third Manifesto is a proposal for the future direction of data and database management systems (DBMSs). It provides a precise, formal definition of an abstract model of data, to be considered as a foundation for the design of a DBMS and a database language.

 

The proposed foundation represents an evolutionary step, not a revolutionary one; it builds on Ted Codd's relational model of data and on the research that sprang from Codd's work. It also incorporates a precise and comprehensive specification for a method of defining data types, including a comprehensive model of type inheritance based on specialization by constraint (as opposed to the “extension” method of subtyping found in object-oriented languages). Thus, it not only redefines the relational model in modern terms and clarifies it where clarification seemed necessary, but also addresses the orthogonal issue of the data types on whose existence the relational model depends. It is therefore offered as a firm foundation for the DBMSs of the future and is essential reading for database students and professionals alike.

 

New to the Third Edition

  • Introductory overview of the relational model and the type theory espoused in the Manifesto, to make the book more suitable for educational purposes and more self-contained
  • A comprehensive set of exercises, with solutions available online for instructors
  • Improvements to Tutorial D, the language used throughout the book for illustrative purposes (at least one implementation of this language, Rel, is now freely available for teaching purposes)
  • All SQL discussions upgraded to the level of the current standard SQL:2003
  • A supporting Web site: www.thethirdmanifesto.com
  • An extensive set of appendixes, including one on the still controversial subject of view updating

 

Hugh Darwen was employed in IBM's software development divisions from 1967 to 2004. In the early part of his career, he was involved in DBMS development, and during the period 1978-1982, he was one of the chief architects of an IBM product called Business System 12, a product that faithfully embraced the principles of the relational model. He has been an active participant in the development of SQL international standards since 1988. He is a lecturer and course development consultant at Warwick University and the Open University, both in the U.K.

 

C.J. Date is an independent author, lecturer, researcher, and consultant specializing in relational database systems. He was one of the first to recognize the fundamental importance of Codd's pioneering work on the relational model. He was also involved in technical planning for the IBM products, SQL/DS and DB2. Date is best known for his books, in particular An Introduction to Database Systems, Eighth Edition (Addison-Wesley, 2004), the standard text in the field, which has sold nearly three quarters of a million copies worldwide.

Biographie de l'auteur :

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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C. J. Date; Hugh Darwen
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