top-down design

<programming>

(Or "stepwise refinement"). The software design technique which aims to describe functionality at a very high level, then partition it repeatedly into more detailed levels one level at a time until the detail is sufficient to allow coding. This approach to software design probably originated at IBM, and grew out of structured programming practices.

Last updated: 1996-08-04

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Top-Down Model

<programming>

A method for estimating the overall cost and effort of the proposed software project from global properties of the project. The total cost and schedule is partitioned into components for planning purposes.

Last updated: 1996-05-29

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