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.

— E. F. Codd Relational Database: A Practical Foundation for Productivity (1982)

More quotes by E. F. Codd

Relational Database: A Practical Foundation for Productivity (1982)

Relational Database: A Practical Foundation for Productivity (1982)

Relational Database: A Practical Foundation for Productivity (1982)

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