Management of archives, of a data base, of a real and a virtual full-text server for electronic texts, videos, pictures, music or magazines and other electronic documents, more specifically for making accessible and available, for accessing and storing a comprehensive and international supply of documents like full texts, metadata and fact data that are generally delivered to the client by electronic transmission; account or supply of accounting systems, respectively; digitalization of records and documents, marketing tender for electronic documents (eg, for publishers and other providers); storage of records and documents; and conducting research