Life Cycle Approach

What is a phase?
Phases subdivide the entire development process into defined sections with verifiable results. They are not set arbitrarily but are determined by the content goals which, when reached, are reflected in the results. Each development step is concluded by a test step.

Course of a project
Projects based on SEM begin with a project kickoff at the start of the Initiation phase and always end with the Termination phase.

A positive project decision in the Initiation phase results in the Definition phase being started. This phase involves detailed project planning, processing of requirements and drawing up of the software requirements specification. If the project is to be continued, e.g. following acceptance of the tender, the further phases Design, Implementation and, if appropriate, Operations are conducted.

Frame phases
The Initiation and Termination phases are known as frame phases. They must always be executed. If the project decision is negative, the Termination phase can be kept short (as an absolute minimum, the reason for the negative project decision must be documented).

Execution phases
All other phases are known as execution phases. They must be executed using one of the five possible organization forms for phase execution (e.g. waterfall model).


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Last modified: 08/27/98 15:41
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