Christopher John Date (born 18 January 1941) is a British independent author, lecturer, researcher and consultant, specialising in

relational database A relational database (RDB) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. A Relational Database Management System (RDBMS) is a type of database management system that stores data in a structured for ...

theory.

Biography

Chris Date attended High Wycombe Royal Grammar School from 1951 to 1958 and received his BA in

Mathematics Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many ar ...

from

Cambridge University The University of Cambridge is a Public university, public collegiate university, collegiate research university in Cambridge, England. Founded in 1209, the University of Cambridge is the List of oldest universities in continuous operation, wo ...

in 1962. He entered the computer business as a mathematical programmer at Leo Computers Ltd. (London), where he quickly moved into education and training. In 1966, he earned his master's degree at Cambridge, and, in 1967, he joined

IBM International Business Machines Corporation (using the trademark IBM), nicknamed Big Blue, is an American Multinational corporation, multinational technology company headquartered in Armonk, New York, and present in over 175 countries. It is ...

Hursley (UK) as a

computer programming Computer programming or coding is the composition of sequences of instructions, called computer program, programs, that computers can follow to perform tasks. It involves designing and implementing algorithms, step-by-step specifications of proc ...

instructor. Between 1969 and 1974, he was a principal instructor in IBM's European education program. While working at IBM he was involved in technical planning and design for the IBM products SQL/DS and DB2. He was also involved with

Edgar F. Codd Edgar Frank "Ted" Codd (19 August 1923 – 18 April 2003) was a British computer scientist who, while working for IBM, invented the relational model for database management, the theoretical basis for relational databases and relational database ...

relational model The relational model (RM) is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by English computer scientist Edgar F. Codd, where all data are represented in terms of t ...

for database management. He left IBM in 1983 and has written extensively of the relational model, in association with

Hugh Darwen Hugh Darwen is a computer scientist who was an employee of IBM United Kingdom from 1967. to 2004, and has been involved in the development of the relational model. Work From 1978 to 1982 he was a chief architect on Business System 12, a dat ...

. As of 2007 his book ''An Introduction to Database Systems'', currently in its 8th edition, has sold well over 700,000 copies, not counting translations, and is used by several hundred colleges and universities worldwide. He is also the author of many other books on

data management Data management comprises all disciplines related to handling data as a valuable resource, it is the practice of managing an organization's data so it can be analyzed for decision making. Concept The concept of data management emerged alongsi ...

, most notably ''Databases, Types, and the Relational Model'', subtitled and commonly referred to as ''The Third Manifesto'', currently in its third edition (note that earlier editions were titled differently, but maintained the same subtitle), a proposal for the future direction of

DBMS In computing, a database is an organized collection of data or a type of data store based on the use of a database management system (DBMS), the software that interacts with end users, applications, and the database itself to capture and ana ...

Works

Chris Date is the author of several books, including: * Several volumes of ''Relational Database Writings'': , , , . * ''A Guide to the SQL standard, 4th ed.'', Addison Wesley, USA 1997, * ''What Not How: The Business Rules Approach to Application Development'', 2000, * ''The Database Relational Model: A Retrospective Review and Analysis'', 2001, * ''Temporal Data & the Relational Model'', 2003, * ''An Introduction to Database Systems'', 2004, * ''Database in Depth: Relational Theory for Practitioners'', 2005, * ''Databases, Types, and the Relational Model, The Third Manifesto'' (with

), 2007, * ''SQL and Relational Theory, 2nd Edition: How to Write Accurate SQL Code'', 2011, . In recent years he has published articles with

Fabian Pascal Fabian Pascal is a Romanian-American consultant to large software vendors such as IBM, Oracle Corporation, and Borland, but he is better known as an author and seminar speaker. Born in Romania, Pascal lives in the San Francisco, CA area of the US, ...

at Database Debunkings.

References

{{DEFAULTSORT:Date, Christopher IBM employees Database researchers 1941 births Living people People from Watford People educated at the Royal Grammar School, High Wycombe

Biography

Works

See also

References