1. Understanding the Dewey Decimal System: The Dewey Decimal System (DDC) is a library classification system that organizes books by subject. It uses a hierarchical structure with ten main classes (000-900) representing broad subject areas.
2. Analyzing the Book's Subject: A librarian will first determine the main subject of the book. For example, a book about the history of the American Civil War would fall under history (900).
3. Finding the Specific Category: The librarian then dives deeper into the specific category. For instance, the book about the American Civil War would fall under United States history (973).
4. Using Subdivisions: The DDC uses a decimal system to create more detailed subdivisions within each main category. The book about the American Civil War might further be classified as 973.7, specifically focusing on the Civil War period.
5. Assigning the DDC Number: Based on the thorough analysis, the librarian assigns the book a unique DDC number. This number represents the book's specific subject and its place within the broader system.
6. Cataloging and Shelf Placement: Once assigned, the DDC number is used in the library catalog and for physically placing the book on the shelf. This allows librarians and patrons to easily locate books on related topics.
Important Notes:
* Trained Librarians: Only trained librarians are qualified to assign DDC numbers, ensuring consistency and accuracy in classification.
* Constant Evolution: The DDC is constantly updated and revised to reflect new knowledge, topics, and technologies.
* Not Just for Nonfiction: While often associated with nonfiction, the DDC also applies to fiction books, grouping them based on literary genre or subject matter.
By using the Dewey Decimal System, libraries worldwide maintain a standardized system for organizing their collections, making it easier for users to find the books they need.