At present, there are several book classifications commonly used in the world, the most famous of which are the International Standard Book Number (ISBN) and the Library of Congress Classification (LCC).
The ISBN classification is based on the content and subject area of books. It divides books into multiple categories, and each category is subdivided into multiple subcategories, eventually forming a hierarchical structure. For example, literature is a big category, and it is divided into novels, poems, plays and other small categories. The characteristics of this classification are simple and clear, easy to understand and use.
Library of Congress classification is a more detailed and comprehensive classification, which divides books into several categories, each category is subdivided into several subcategories, and then further subdivided into more specific subcategories. This classification is characterized by nuance, which can describe the contents and characteristics of books more accurately.
In addition to these two commonly used classifications, there are some other book classifications, such as DeweyDecimalClassification (DDC) in Germany and CollinsClassification in Britain. These classifications are widely used in their respective countries and regions.