An HRIS (Human Resources Information System) is a software system used to collect and manage employee data. It can perform functions like benefits administration, payroll, training tracking, and performance management. While HRIS systems aim to increase efficiency and compliance, they are primarily transactional databases rather than reporting or analytical tools. Implementing an HRIS successfully requires adequate time, resources, training, and buy-in from employees - a lack of any of these factors can cause an HRIS implementation to fail.