Learn System Analysis and Design with step by step lessons, Tutorials, Design and more. We come across many common systems in our daily life. Many types of systems appear to be quite different; they turn out to have many similarities. There are common principles and philosophies and theories that apply remarkably well to virtually all kinds of systems. We can often apply to systems that we build in the computer field, what we have learned about other systems. The term “System” has several defin