An integrated library system (ILS), also known as a library management system (LMS), is a software system used to track and manage library materials, orders, bills paid, and patron information. ILS systems typically include modules for acquisitions, cataloging, circulation, serials, and a public online catalog. ILS systems use a relational database and barcode scanning to integrate the different library management functions into a unified interface. The use of ILS systems began in the 1960s and grew with the development of computer technologies and standards, allowing libraries to automate tasks that were previously done manually.