The examination of a problem and the creation of its solution. Systems analysis is effective when all sides of the problem are reviewed. Systems design is most effective when more than one solution can be proposed. A systems analyst is a person who uses analysis and design techniques to solve business problems using information technology. Systems analysts may serve as change agents who identify the organizational improvements needed, design systems to implement those changes, and train and motivate others to use the systems.

In this dynamic world, the subject System Analysis and Design (SAD), mainly deals with the software development activities. 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. Most common System design tools are Context Diagrams, E-R Diagrams and Flow Chart. Context Diagrams is the first graphic that is produced using structured technique is the context diagram.

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