Edgar Frank Codd citations

Edgar Frank « Ted » Codd est un informaticien britannique. Il est considéré comme l'inventeur du modèle relationnel des SGBDR. Wikipedia

✵ 19. août 1923 – 18. avril 2003

Edgar Frank Codd: 5 citations 0 J'aime

Edgar Frank Codd: Citations en anglais

“At the time, Nixon was normalizing relations with China. I figured that if he could normalize relations, then so could I.”

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E. F. Codd

http://www.dba-oracle.com/oracle_tips_codd_obit.htm
Relational Database: A Practical Foundation for Productivity (1982)

“It is no surprise that attempts such as those of CODASYL and ANSI to develop data structure language (DDL) and data manipulation language (DML) in separate communities have yielded many misunderstandings and incompatibilities.”

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E. F. Codd

Relational Database: A Practical Foundation for Productivity (1982)

“The adverse impact on development productivity of requiring programmers to navigate along access paths to reach target data […] was enormous. In addition, it was not possible to make slight changes in the layout in storage without simultaneously having to revise all programs that relied on the previous structure. […] As a result, far too much manpower was being invested in continual (and avoidable) maintenance of application programs.”

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E. F. Codd

Relational Database: A Practical Foundation for Productivity (1982)

“Relational processing entails treating whole relationships as operands. Its primary purpose is loop-avoidance, an absolute requirement for end users to be productive at all, and a clear productivity booster for application programmers.”

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E. F. Codd

Relational Database: A Practical Foundation for Productivity (1982)

“The most important motivation for the research work that resulted in the relational model was the objective of providing a sharp and clear boundary between the logical and physical aspects of database management.”

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E. F. Codd

Relational Database: A Practical Foundation for Productivity (1982)

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