• 1943
    (b.) - ?


A computer scientist, he was an employee of IBM United Kingdom from 1967 to 2004, and has been involved in the history of the relational model. From 1978 to 1982 he was a chief architect on Business System 12, a database management system that faithfully embraced the principles of the relational model. He worked closely with Christopher J. Date and represented IBM at the ISO SQL committees (JTC1 SC32 WG3 Database languages, WG4 SQL/MM) until his retirement from IBM. He was an active participant in the development of the international standard for SQL (and related standards) from 1988 to 2004. As of 2011, he lectures on Relational Databases at the Department of Computer Science, University of Warwick (UK), and is a tutor for the Open University (UK) where he was awarded a MUniv honorary degree for academic and scholarly distinction. He was also awarded a DTech (Doctor in Technology) honorary degree by the University of Wolverhampton. He currently teaches a database language designed by Chris Date and himself called Tutorial D. He has written a book on the card game bridge and has a website on the subject of double dummy problems. Alan Truscott has called him "the world's leading authority" on composed bridge problems. He was responsible for the double dummy column in Bridge Magazine from 1965 to 1990. A prolific author, his early works were published under the pseudonym of Andrew Warden: both names are anagrams of his surname. He is the author of ?The Askew Wall: SQL and The Relational Model (background to The Third Manifesto)? (PDF), UK: University of Warwick, (January 2006) [2005]; ?An Introduction to Relational Database Theory? (PDF) (3rd ed.), BookBoon, ISBN 978-87-7681-500-4, 231 pp. (January 2009). He is also the co-author with Christopher J. Date; of The Third Manifesto a proposal for serving object-oriented programs with purely relational databases without compromising either side and getting the best of both worlds, arguably even better than with so-called object-oriented databases. (March 1995), ACM SIGMOD Record (New York: ACM Press) 24 (1): 39?49, doi:10.1145/202660.202667, ISSN 0163-5808, retrieved 2010-11-16. In addition he is the author or co-author of: with Lorentzos, Nikos A. (2003), ?Temporal Data and the Relational Model: a detailed investigation into the application of interval and relation theory to the problem of temporal database management? (1st ed.), San Diego: Morgan Kaufmann, ISBN 1-55860-855-9, LCCN 2002110398, OCLC 51453450, LCC QA76.9.D3 D3729 2003, 422 pp.; and with Elizabeth Hudnott,; and Jane Sinclair; (2010), "Efficient multiple assignment to database tables", AIKED'10 Proceedings of the 9th WSEAS international conference on Artificial intelligence, knowledge engineering and data bases, Stevens Point, WI, USA: World Scientific and Engineering Academy and Society (WSEAS), ISBN 978-960-474-154-0
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    Chief architect on Business System 12, a database management system that embraced the principles of the relational model
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