Think what it would be like to use a library whose books were arranged in no special order. It would take Neo forever to find what he needs. Classification systems organise library collections into subject-related categories, so similar topics will be grouped together on the shelf.
The Dewey Decimal Classification is a general knowledge organisation tool and is shared through the library’s online catalogue. In the DDC, basic classes are organised by disciplines or fields of study as illustrated by the image below:
A call number is a unique identification code assigned to each book that clearly identifies it from other books. For Example:
|Class. 300||= Social Science|
|Call Number 305||= Groups of people|
|305.8||= Ethnics and National Groups, Culture and Race = Racism|
Neo can find the call number on the spine of a book.