The Zeitschriftendatenbank or ZDB (translated as: German Union Catalogue of Serials) is the central bibliographical database for title and ownership records of ongoing collections in Germany and Austria, for example from trade journals, magazines and newspapers.[1] The ZDB holds records of almost all German scientific libraries and many other public libraries and is freely available on the Internet.[1] The journal database is managed by the Staatsbibliothek zu Berlin (SBB) in cooperation with the Deutsche Nationalbibliothek (DNB), the German National Library, which is responsible for the technical system support and further development.