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MARC 21 was designed to redefine the original MARC record format for the 21st century and to make it more accessible to the international community. MARC 21 has formats for the following five types of data: Bibliographic Format, Authority Format, Holdings Format, Community Format, and Classification Data Format. [ 3 ]
MARC21 is an instance of ISO 2709 that has the following characteristics: tags are in the range 002–999 only; there is a two-character indicator on each field, and each character is a separately defined data element; the identifier within data fields (called "subfield code" in MARC21) is a single ASCII character preceded by IS 1 of ISO 646.
As an XML schema it is intended to be able to carry selected data from existing MARC 21 records as well as to enable the creation of original resource description records. It includes a subset of MARC fields and uses language-based tags rather than numeric ones, in some cases regrouping elements from the MARC 21 bibliographic format.
The MARC-8 charset is a MARC standard used in MARC-21 library records. [1] The MARC formats are standards for the representation and communication of bibliographic and related information in machine-readable form, and they are frequently used in library database systems.
Henriette Davidson Avram (October 7, 1919 – April 22, 2006) was a computer programmer and systems analyst who developed the MARC format (Machine Readable Cataloging), the international data standard for bibliographic and holdings information in libraries.
These records, available online free-of-charge and typically in MARC 21 format, contain a variety of identifying and annotative remarks on these entities — such as alternative or full names of people and organisations, date or year of birth of authors of books or subjects of books, cross-referencing of affiliated entities, and so on.
The main format for storage, maintenance and sharing PSH is the MARC 21 Format for Authority Data, which is implemented in library automated systems. PSH is also available in SKOS, using RDF/XML syntax, which is a version suitable for web distribution. Single headings can be accessed on the PSH website through URI links. Alternatively, the ...
MARC21 – For bibliographic data [5] − Import and Export in ISO 2709, MARC XML MARC21 – For authority files; − Import available in ISO 2709 MARC21 – Holdings; − Holdings data structures designed for MARC21 Holdings. Z39.76 – Holdings statement display; MODS 3.0, AGRIS AP; − Bibliographic records can be exported in MODS 3.0 and ...