Descriptive cataloguing provides access points for the documents in the Swiss National Library (NL) so that they can be accessed in the online catalogue Helveticat.
The bibliographic description allows each document in the NL to be clearly identified. It is carried out according to the international RDA (Resource Description & Access) standard using the international format MARC 21. Name authority data are linked to the German Integrated Authority File (Gemeinsame Normdatei, GND). These data are checked for each bibliographic record.
RDA NL Supplementary Rules
Since October 2016, descriptive cataloguing at the NL has been carried out in accordance with the RDA (Resource Description & Access) standard and since November 2023 according to the RDA DACH standard (Application Guidelines RDA for German-speaking Regions).
In order to take account of some specific Swiss characteristics, e.g. multilingualism, the NL has defined additional rules in its RDA NL Supplementary Rules.
The standardised access points for persons, corporate bodies and congresses are linked to the GND (Integrated Authority File).
The standardised access points in Helveticat, the NL’s catalogue, are only being updated to correspond to RDA standards if they are actually used again; otherwise the records remain unchanged and correspond to previous cataloguing rules (AACR, VSB).
MARC 21 – Application in the Swiss National Library NL
The bibliographic records of the NB are in the international format MARC21. “MARC21 – Application in the NL” lists the fields and subfields used by the BN. It refers to the field descriptions provided by the Library of Congress.
Cataloguing of digital publications
The bibliographic data of the digital publications are transmitted by the suppliers and automatically included in the online catalogue Helveticat. The standardised access points are processed manually. The records obtain a link to the digital collections of the NL. All digital content can be found by full text search.
Open access to certain content is restricted due to copyright reasons. These documents can be consulted in the public rooms within the NL. Information about the access status appear in the search results.
SLB-METS, Version 2.6, 18th December 2019 (in German) (PDF, 964 kB, 25.08.2021)The NL’s internal data format is based on the structure of the METS standard (Metadata Encoding & Transmission Standard, Version 1.3.)
Last modification 25.08.2025
