In 1876, Melvil Dewey published his research findings in Dewey Decimal System which totally changed the face of library throughout the world. Prior of the Dewey Decimal system, libraries used haphazard and unscientific ways to shelve the books in a library. Relative location and relative index are two new features in the new classification scheme by Dewey. Previously, books in libraries were numbered according to their locations on the shelves. In other words ...