The 3 levels of requirements

March 21, 2008 @ Better Projects from Craig

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Traditionally people talk about three levels of requirements.

You can think of it as a sort of heirarchy descending from the strategic goals of the organisation to the physical implementation of tools and processes.
  • Business Requiremets
  • Functional Requirements
  • System Requirements

Here is a concise article explaining the concept. Note it adds a fourth level to the front - market drivers for change. This article describes the four levels of requirements, gives a view on who should 'own' each level and how they are usually modelled or documented - "The Requirements Hierarchy" Posted April 30, 2007 by John Mansour

And here is a similar article with a slightly different view at Search Software Quality; What Are Requirement Types Jan 01, 2008 by Roxanne Miller.

Lastly, don't forget non-functional specifications. Often a neglected area, this is where many projects have trouble delivering.




Picture from Steffe at Flickr


This article is syndicated from Better Projects . The original article is available here. Read more in Better Projects, Project Management News .

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