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Introduction

In the DSS literature, experts prescribe a variety of approaches or methodologies for designing and developing Decision Support Systems. Everyone does not however agree on what methodology works best for building different types of DSS. If managers and DSS analysts understand the various methods, they can make more informed and better choices when building or buying a specific DSS.

In general, what is called a "decision-oriented approach" seems best for Decision Support Systems projects. After reviewing design and development issues, decision-oriented diagnosis, and feasibility studies, this chapter reviews three alternative approaches for developing a DSS. Because the scope of Decision Support Systems is expanding and because development tools are changing rapidly, the perceived advantages of the three alternative development approaches have become somewhat controversial. For example, a highly structured, life-cycle development approach has recently become popular with some consultants for developing Enterprise-Wide DSS. The advantages and disadvantages of each development approach are discussed. The final sections of this chapter discuss outsourcing DSS, project management, and the various participants on a DSS design and development team.