What type of catalog does the Online Computer Library Center provide?

The Online Computer Library Center (OCLC) provides a global catalog, specifically known as WorldCat. This extensive database includes the collections of libraries from over 170 countries, allowing users to search for books, articles, and other materials held in libraries worldwide. The global nature of this catalog enables it to provide a comprehensive overview of library holdings, making it a crucial resource for researchers, students, and librarians seeking materials that may not be available in their local libraries. By connecting users to a vast network of library resources, WorldCat facilitates both interlibrary loans and access to rare or unique items from different parts of the world, which is essential in the context of resource sharing in libraries.