The document discusses the key aspects and functions of a Human Resource Information System (HRIS). An HRIS is a software system that collects, stores, manages, and analyzes human resources data. It discusses the various subsystems that make up an HRIS, including recruitment, training, payroll, and performance management. The purpose of an HRIS is to provide managers with timely and accurate HR-related information to inform decision-making. It also outlines the steps involved in planning, implementing, and continuously reviewing an HRIS to ensure it meets the changing needs of an organization.