System Analysis and Design (SAD)
Introduction to System Analysis and Design (SAD)
System are created to solve Problems. One can think of the systems approach as an organized way of dealing
with a problem. In , the subject system analysis and design, mainly deals with the software development
this dynamic worl d
System :A collection of components that work together to realize some objectives forms a system. Basically there are
three major components in every system, namely input, processing and output.
In a system the different components are connected with each other and they are interdependent. For
example, human body represents a complete natural system. We are also bound by many national systems
such as political system, economic system, educational system and so forth. The objective of the system
demands that some output is produced as a result of processing the suitable inputs. A well-designed system
also includes an additional element referred to as ‘control’ that provides a feedback to achieve desired
of the system.
It is a process of collecting and interpreting facts, identifying the problems, and
decomposition of a system into its components. Analysis is conducted for the purpose of studying a system
or its parts in order to identify its objectives. It is a problem solving technique that improves the system and
ensures that all the components of the system work efficiently to accomplish their purpose.
Analysis specifies what the system should do.
It is a process of planning a new business system or replacing an existing system by
defining its components or modules to satisfy the specific requirements. Before planning, you need to
understand the old system thoroughly and determine how computers can best be used in order to operate
System Design focuses on how to accomplish the objective of the system.
Definition of SAD
Systems analysis and design the process of observing systems for troubleshooting or development
purposes. It is applied to information technology, where computer-based systems require defined analysis
according to their makeup and design.
System Analysis and Design (SAD) mainly focuses on: