onlinekatalogen

OnlineKatalogen is a term used in several Nordic library contexts to describe a library's online catalog, the digital interface that enables patrons to search bibliographic records and view library holdings. Its core function is to provide access to information about items in the collection, including bibliographic details, location, availability, and loan status. Through OnlineKatalogen users can search by title, author, subject, or ISBN, browse catalog records, and view item details. Depending on the setup, they may also place holds, renew loans, request interlibrary loans, and access digital materials.

Technical implementations typically rely on a library management system linked to metadata standards such as MARC 21 or BIBFRAME, with records connected to holdings and locations. User accounts may support saved searches, favorites, and loan history, subject to privacy policies. Search interfaces often offer basic and advanced modes, boolean operators, and filters like format, language, publication year, and subject.

Interoperability is common, with support for standard protocols (for example SRU/Z39.50) and connections to discovery layers that aggregate catalogs across libraries or networks. Many OnlineKatalogen services link to full text, digital repositories, and external databases, and are accessible via desktop and mobile devices.

Regional usage: the term OnlineKatalogen is prevalent in Danish, Norwegian, and Swedish libraries and may refer to a specific system or a generic online catalog concept within a library network.