Librarianship is the methodology responsible for knowledge organization systems. This is a methodology that encompasses the study of how to categorize, catalog, and locate resources. It is used in traditional libraries, also in museums, science labs, and even in hospitals. When thinking of the digital world, probably one of the best examples would be search engines such as Google, which is basically a giant digital library where all information is digitally cataloged. This information must then be extracted in a logical, relevant, and organized way for the users.