Date, C.J. 1941- (Christopher John Date)

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Date, C.J. 1941- (Christopher John Date)


Born January 18, 1941, in Watford, England; immigrated to the United States, 1974; naturalized U.S. citizen; son of Henry George (a customs and excise officer) and Irene Winifred (a homemaker) Date; married Peta Linden Patterson (an artist), July 20, 1963; children: Sarah, Jennie. Ethnicity: "Caucasian." Education: Cambridge University, B.A. (with honors), 1962, M.A., 1966. Politics: Green.


Office—P.O. Box 1000, Healdsburg, CA 95448.


Leo Computers (and successor companies), London, England, mathematical programmer and instructor, 1962-67; International Business Machines, database technologist, language designer, and instructor at Development Laboratory in Hursley, England, 1967-74; database technologist, language designer, and instructor at Programming Center in Palo Alto, CA, 1974-77, and Santa Teresa Laboratory, San Jose, CA, 1977-83; independent database author, lecturer, and researcher, 1983—. Codd & Date International, founding partner, c. 1985-89. Lecturer on technical subjects throughout the world.


Association of Computing Machinery, British Computer Society, Irish Computer Society (fellow).


Honorary D.Tech., DeMontfort University, 1994; inducted into Computing Industry Hall of Fame, 2004.


An Introduction to Database Systems, Addison-Wesley (Reading, MA), 1975, 8th edition, Pearson/Addison Wesley (Boston, MA), 2004.

An Introduction to Database Systems: Volume II, Addison-Wesley (Reading, MA), 1983.

Database: A Primer, Addison-Wesley (Reading, MA), 1983.

A Guide to DB2, Addison-Wesley (Reading, MA), 1984, 4th edition (with Colin J. White), 1992.

Relational Database: Selected Writings, Addison-Wesley (Reading, MA), 1986.

A Guide to Ingres, Addison-Wesley (Reading, MA), 1987.

A Guide to the SQL Standard, Addison-Wesley (Reading, MA), 1987, 4th edition (with Hugh Darwen), 1996.

(With Colin J. White) A Guide to SQL/DS, Addison-Wesley (Reading, MA), 1988.

Relational Database: Selected Writings 1985-1989, Addison-Wesley (Reading, MA), 1990.

(With Hugh Darwen) Relational Database: Selected Writings 1989-1991, Addison-Wesley (Reading, MA), 1992.

(With David McGoveran) A Guide to SYBASE and SQL Server, Addison-Wesley (Reading, MA), 1992.

Relational Database: Selected Writings 1991-1994, Addison-Wesley (Reading, MA), 1995.

(With Hugh Darwen and David McGoveran) Relational Database: Selected Writings 1994-1997 Addison-Wesley (Reading, MA), 1998.

(With Hugh Darwen) Databases, Types, and the Relational Model: The Third Manifesto, Addison-Wesley (Reading, MA), 1998, 3rd edition, 2006.

What Not How: The Business Rules Approach to Application Development, Addison-Wesley (Reading, MA), 2000.

The Database Relational Model: A Retrospective Review and Analysis, Addison-Wesley (Reading, MA), 2001.

(With Hugh Darwen and Nikos A. Lorentzos) Temporal Data and the Relational Model, Morgan Kaufmann Publishers (San Diego, CA), 2003.

Database in Depth: Relational Theory for Practitioners, O'Reilly Media (Cambridge, MA), 2005.

Relational Database: Selected Writings 1997-2000, 2006.

Date on Database: Writings 2000-2006, Apress (Berkeley, CA), 2006.

The Relational Database Dictionary, O'Reilly Media (Cambridge, MA), 2006.

Logic and Databases: The Roots of Relational Theory, Trafford (Victoria, British Columbia, Canada), 2006.

Columnist for Database Programming and Design and Intelligent Enterprise, 1992-2001; occasional columnist, DataToKnowledge Commentary, 2000—. Contributor of more than 300 articles to technical publications and Internet Web sites.

Date's books have been published in Chinese, Dutch, French, German, Greek, Italian, Japanese, Korean, Polish, Portuguese, Romanian, Russian, Spanish, and Braille.



DBMS, Volume 2, number 9, September, 1989, "A Chat with the Great Explainer," interview with C.J. Date.

InfoDB, Volume 9, number 4, August, 1995, Rick van der Lans, "The Next 25 Years of the Relational Model?," interview with C.J. Date.

Interface, Volume 3, number 2, summer, 1993, "The Relational World of Chris Date," interview with C.J. Date.

Northern California Oracle User Group Journal, May, 2005, "Relational Database Theory for a Solid Foundation," interview with C.J. Date.