About MARC 21

The MARC formats are standards for the representation and exchange of data in machine-readable form.The Network Development and MARC Standards Office (NDMSO), supported by the MARC Advisory Committee, is responsible for maintaining and developing the format.

MARC 21 is also available in an XML structure as well as in two extended format variants in the context of MARC local fields.

In 2004 the Committee for Library Standards resolved to deploy MARC 21 as a uniform exchange format in an effort to bring the German standards into line with international practice. Since the bibliographic year 2009, the German National Library has been delivering its data in the format MARC 21. The point of contact for German-speaking users of the format is the Office of Library Standards at the German National Library. Most of the documents are available in German only.

MARC 21 in the German National Library

Overview of our Export-Release-Cycle depending on the ILTIS-Change-Management, information about the changes, test data.

Worktools

(only available in German)

MARC local fields

Additionally, there are two extended format variants of MARC21-xml available for specific purposes (e. g. interlibrary lending):

• MARC21plus-xml (bibliographic data in MARC21-xml Bibliographic and holdings data in MARC21-xml Holdings in an XML element with the designation "Collection"):
  example query via the SRU interface
• MARC21plus-1-xml (bibliographic data in MARC21-xml Bibliographic with MARC field 924 (in German only), which is limited to the bibliographic data of the German Union Catalogue of Serials (ZDB) and contains selected holdings information relevant for interlibrary lending on the bibliographic level):
  example query via the SRU interface

Further documentation (only available in German):

Contact

metadatendienste@dnb.de