This is paper simplifies potential of a library classification scheme that are usually considered in the LIS practices and literature and clarifies such a scheme’s three main roles, namely information planning, data retrieval, and self-preparation. In this manner, the paper states the useful necessities of bibliographic arrangements, which generally are topic collection and interpretation of perusing the collection. It clarifies by particulars the components of a library classification scheme and their purpose. The main components are schedules, notations, and catalogue. It also states their distinguished features, such for example generalia class, from divisions, book figures, and devices for number mixture which are not essential in an information classification. It demonstrates with examples from Web Dewey good examples of additional features of a virtual library cataloguing system. It highlights that official backup and a review machinery are significant for a classification to continue and remain appropriate in the print and e-environment.