An Integrated Library System (ILS) is used to automate library management. Typically, an ILS is built around a database used to track titles & items in the collections, patron data, and transactions such as checkouts. Other software components provide the business logic to control transactions and the tools used by library staff and patrons to operate the system. At present, SELCO uses the Horizon ILS, produced and maintained by SirsiDynix. In this section of the website, we consider a broader definition of ILS and include links to services that are related to, though not an integral part of, Horizon: