This document discusses human resource information systems (HRIS). It defines an HRIS as a system that provides centralized data to support human resource processes. An HRIS integrates HR and IT by allowing HR activities to occur electronically. The document outlines the key benefits of an HRIS, including increased efficiency, cost reductions, improved decision making for management and HR, and time savings and data access for employees. It also describes the main components, functions, and models of an HRIS system.