You can?t truly understand Systems Analysis and Design (SAD) by only reading about it; you have to do it. In Systems Analysis and Design, Third Edition, Dennis, Wixom, and Roth offer a hands-on approach to actually doing SAD. Building on their experience as professional systems analysts and award-winning teachers, these three authors capture the experience of actually developing and analyzing systems. They focus on the core set of skills that all analysts must possess--from gathering requirements and modeling business needs, to creating blueprints for how the system should be built.