Databases vendors and journal publishers sell a variety of online access level subscriptions to libraries. The library always strives to purchase at least the basic access level subscriptions. When the library is unable to purchase the highest level access subscriptions, it relies on its interlibrary loan service (IDS) to obtain journal articles and to borrow books for you. this service is free to CHST faculty, staff and students. The following list provides examples of the types of library databases available for you.