.. Copyright (C) ALbert Mietus, SoftwareBeterMaken.nl; 2014. Part of Pathways project. -*- coding: utf-8 -*- ========== More terms ========== .. glossary:: V-Model The famous V-Model shows the relations between *development*-lifecycle activities. There are several definitions and origins of the model, as well as a lot of *misunderstanding*. All model-derivations have multiple hierarchical levels and are based on three kind of activities: *design* (or definition), *integration* (or test) and *validation* (or feedback). The model itself is non-linear, but most implementations of the V-Model are more or less *sequential* in time, however. The **V-Model** is an extension to the older *Waterfall model*; which is linear. But many people regard them as the same; probably due the typical sequential execution of the V-Model. That *sequential* execution is often seen as a drawback of the V-Model. And used to advocate 'modern' :term:`agile` software development methods; like :term:`scrum`. .. seealso:: ``_ This wikipedia article describes the *generic* system engineering V-Model and variations. ``_ There is a separate wikipedia article on the software engineering variation of the V-Model Agile .. seealso:: ``_ Scrum .. seealso:: ``_ Geïntegreerd Agile Integrated Agile The is the mix of Lean, Agile and Scrum advocated by Albert Mietus Lean .. todo:: DocMe (Lean) XXX Pathways A **concept** and (reference) *implementation* to execute (system/user) tests to **approve** the (developing) product is working correctly. .. LocalWords: seealso