Choose a Development Approach
As noted in the overview, three approaches to DSS development are discussed in the literature and used by practitioners. The approaches or methodologies have been called a variety of names. Essentially we begin by focusing on decisions and decision processes in the decision-oriented design steps, then a project manager or an end-user implement a more or less structured development methodology.
Figure 4.1 shows a recommended process hierarchy for DSS design and development. The process begins with decision-oriented diagnosis and feasibility analysis and then moves to in-house or outsourced development of the proposed Decision Support System using one of three development approaches. We will examine these alternative approaches.
Figure 4.1. A DSS Systems Design and Development hierarchy.