DDC (Dewey Decimal Classification)

The Dewey Decimal Classification (DDC) is a system used by libraries to organize books and materials by subjects. It assigns each item a numerical code, typically ranging from 000 to 999, that reflects its main topic. These numbers are grouped into ten broad classes, such as sciences, literature, or history, with more specific topics subdivided further. This system helps users locate books quickly and efficiently, as similar subjects are stored together. Overall, DDC provides a logical and consistent way to categorize vast amounts of knowledge, making library navigation easier for both staff and visitors.