SDM, SDM2, SDM/70 and Spectrum more notably evolved into system development methodologies that were based on the works of Steven Ward, Tom Demarco, Larry Constantine, Ken Orr, Ed Yourdon, Michael A. Jackson and others as well as data modeling techniques developed by Thomas Bachmann and Peter Chen.
Kenneth T. (Ken) Orr (born ca 1939) is an American software engineer, executive and consultant, known for his contributions in the field of software engineering to structured analysis and with the Warnier/Orr diagram.
SA and SD were accompanied by notational methods including structure charts, data flow diagrams and data model diagrams, of which there were many variations, including those developed by Tom DeMarco, Ken Orr, Larry Constantine, Vaughn Frick, Ed Yourdon, Steven Ward, Peter Chen, and others.
Ken Livingstone | Ken Burns | Ken Loach | Ken Russell | Ken Kesey | Ken Dodd | Ken Salazar | Ken Sugimori | Ken Saro-Wiwa | Ken Vandermark | Ken Dryden | Ken | Ken Rosewall | Ken Mandelbaum | Ken Dorsey | Ken Wilber | Ken Venturi | Ken Follett | Ken Berry | Ken Stringfellow | Ken Jennings | Ken Howard | Ken Campbell | Ken Arthurson | Ken Schaffer | Ken Patera | Ken Nordine | Ken Hirai | Ken Hendricks | Ken Farrington |