This document provides an overview of management information systems (MIS). It defines key concepts like management, information, systems, data, and how MIS supports management functions. It describes the roles and levels of management including top, middle, and lower management. It also outlines the objectives, advantages, and functions of MIS like decision making, coordination, and performance comparison to support management activities. MIS is a computer-based system that processes organizational data into useful information to help managers at different levels plan, organize, and make informed decisions.