Online Grading System

CHAPTER I

INTRODUCTION

A system is a collection of interrelated components that function together to achieve some outcome. It is an organized group of interdependent elements or parts linked by regulated interaction for the purpose of achieving one or more predetermined goals or objectives. It is a group of interdependent items that interact regularly to perform a task.

Systems design is simply the design of systems. It implies a systematic and rigorous approach to design—an approach demanded by the scale and complexity of many systems problems.

System analysis is the process of understanding and specifying in detail what the information system should do and a set of steps required to examine an existing system or subsystem in order to identify the problem causing of inadequacy.

System Analysis and Design is 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. The plans for the care and feeding of a new system are as important as the problems they solve.

An Information System is an integrated set of components for collecting, storing, and processing data and for delivering information, knowledge, and digital products. Business firms and other organizations rely on information systems to carry out and manage their operations, interact with their customers and suppliers, and compete in the marketplace. For instance, corporations use information systems to reach their potential customers with targeted messages over the Web, to process financial accounts, and to manage their human resources. Governments deploy information systems to provide services cost-effectively to citizens.

The Software Development Life Cycle is essentially a series of steps, or phases, that provide a model for the development and lifecycle management of an application or piece of software. The methodology within the SDLC process...