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| | Edgar Codd, database theorist, dies at 79 CNET News.com |
 | | Edgar F. Codd, a mathematician and computer scientist who laid the theoretical foundation for relational databases--the standard method by which information is organized in and retrieved from computers--died on Friday at his home in Williams Island, Fla. He was 79. |
 | | Codd is survived by his wife of Williams Island; a daughter, Katherine Codd Clark of Palo Alto, Calif.; three sons, Ronald of Alamo, Calif., Frank of Castro Valley, Calif., and David of Boca Raton, Fla.; and six grandchildren. |
 | | Codd's idea, based on mathematical set theory, was to store data in cross-referenced tables, allowing the information to be presented in multiple permutations. |
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