Feasibility Study,Introduction

Chapter 4 discussed the steps that make up the initial investigation. Several
activities have been completed:
1. A user has recognized a need.
2. User requirements are determined and the problem has been defined.
3. An initial investigation is launched to study the existing system and verity the problem.
4. The analyst (with user participation) has verified the objectives, constraints, and required outputs, resulting in a project directive that the user has approved.

The next step is to determine exactly what the candidate system is to do by defining its expected performance. Thus, a feasibility study is carried out to select the best system that meets performance requirements. This entails identification, description, and evaluation of candidate systems and selection of the best system for the job. This chapter, then, addresses the system performance definition and expounds on the feasibility study as a second major step in the system development life cycle.