from
The Free On-line Dictionary of Computing (8 July 2008)
spiral model
<programming> A {software life-cycle} model which supposes
incremental development, using the {waterfall model} for each
step, with the aim of managing risk. In the spiral model,
developers define and implement features in order of
decreasing priority.
[Barry Boehm, "A Spiral Model of Software Development and
Enhancement", ACM SIGSOFT Software Engineering Notes, August
1986].
[Barry Boehm "A Spiral Model of Software Development and
Enhancement" IEEE Computer, vol.21, #5, May 1988, pp 61-72].
[Better explanation?]
(1997-11-23)