A person involved in keeping and managing a library, also cares for the files and publication in a library is called a librarian.
A librarian works in a college or public library, library within a business or company, elementary or secondary school media center or at agencies like a law firm or hospital. Some librarians also work as independent entrepreneurs working as indexers, information specialists, and catalogers. They can be categorized as school, correctional, special, public independent or academic librarians. Librarians are associated with collections of books. Modern librarians also deal with information in many formats, which include magazines, newspapers, books, audio recordings, maps, video recordings, photographs and other graphic material.
Basic qualification required for librarian is a master's degree in library science (MLS) for the post of librarian in academic, public, and school libraries. Most MLS programs require a bachelor's degree, but no specific undergraduate program is required.