WebDewey

WebDewey. It is the online, continuously updated version of the Dewey Decimal Classification (DDC) system, a proprietary library classification scheme owned by OCLC. This web-based service provides authorized subscribers with access to the full DDC schedules, relative index, and associated editorial support materials, facilitating efficient and consistent classification of library materials. Its development and maintenance are central to the modern application of one of the world's most widely used library classification systems.

Overview

WebDewey serves as the authoritative electronic resource for the Dewey Decimal Classification, replacing the traditional print volumes. Hosted and maintained by OCLC, it integrates the complete classification schedules with a powerful search interface and editorial updates. The system is designed for professional catalogers and librarians working in institutions that utilize the DDC, such as public libraries, school libraries, and many academic libraries outside major research institutions. Its primary function is to provide precise notation for organizing knowledge on library shelves.

Features and functionality

The platform offers a sophisticated search engine allowing users to find relevant DDC numbers by keyword, LCSH subject heading, or DDC number itself. Key features include built-in mappings to LCC and MeSH, a hierarchical browser for navigating the classification structure, and extensive editorial notes that guide number selection. It also includes the complete Relative Index and links to associated OCLC authority records, enhancing cataloging workflow efficiency and consistency across different institutions.

History and development

The development of WebDewey began in the late 1990s as OCLC and the DDC editorial team, based at the Library of Congress, sought to modernize access to the classification system. It was first released to subscribers in 2000, coinciding with the publication of the DDC 21st Edition. Subsequent updates have been issued quarterly, incorporating new topics, terminology changes, and structural revisions. This continuous update cycle represents a significant shift from the static, multi-year revision cycle of the print editions, allowing the system to remain current with knowledge trends.

Access and licensing

Access to WebDewey is restricted to subscribers through an annual licensing agreement with OCLC. Licenses are typically held by individual libraries, library consortia, or educational institutions. The subscription model provides authorized users with remote access to the service via standard web browsers. Some library and information science programs, such as those at the University of Illinois Urbana-Champaign or the University of Washington, may provide access for educational purposes as part of their curriculum on knowledge organization.

Relationship to the Dewey Decimal Classification

WebDewey is the electronic manifestation of the Dewey Decimal Classification system. It contains all the intellectual content of the full print edition but is enhanced with digital tools and more frequent updates. The underlying classification principles, hierarchical structure, and notation system developed by Melvil Dewey remain intact. The editorial policy is directed by the DDC editors at the Library of Congress in consultation with an international editorial policy committee, ensuring continuity with the print tradition while leveraging digital advantages.

Use in libraries

Libraries worldwide implement WebDewey in their technical services departments to classify books, serials, and non-print materials. It is integral to the workflow within integrated library systems like Alma or Sierra. Its use promotes standardization, which is crucial for union catalogs like WorldCat. Training in WebDewey is a common component of professional development for catalogers and is often covered in workshops offered by associations like the American Library Association or regional bodies such as the Association for Library Collections & Technical Services. Category:Library classification systems Category:OCLC products Category:2000 software