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metadatafiles.md

File metadata and controls

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Setting Metadata Values via Files

While the preferred and recommended method for setting Internet Archive item metadata is via headers, it is possible to provide files containing metadata. If you choose to provide a metadata file instead of using headers it is strongly recommended that the metadata file be the first uploaded during item creation.

When providing a metadata file, please provide only one file per item. It is not necessary to provide a metadata file in each format. Additional files will be generated automatically from the one which you provide.

IDENTIFIER_marc.xml

This file must contain metadata in well-formed MARCXML format.

It must be named appropriately or it will not be recognized. The proper naming scheme is the items identifier followed by _marc.xml.

An example IDENTIFIER_marc.xml file can be found in the Appendix.

IDENTIFIER_meta.mrc

This file must contain metadata in binary MARC format according to the ISO 2709 standard. It must be named appropriately or it will not be recognized. The proper naming scheme is the items identifier followed by _marc.xml.

An example IDENTIFIER_meta.mrc file can be found in the Appendix.

How these metadata files are processed

If an IDENTIFIER_meta.mrc file is located it is used to generate an IDENTIFIER_marc.xml file. Any existing IDENTIFIER_marc.xml file will be overwritten by this operation.

The IDENTIFIER_marc.xml file is used to generate a IDENTIFIER_dc.xml file of Dublin Core metadata. Any existing IDENTIFIER_dc.xml file will be overwritten by this operation. The Dublin Core fields are extracted and populated according to the Library of Congress MARC21 to Dublin Core XSL stylesheet. In addition, Internet Archive will extract information from the following MARCXML fields:

  • 041 subfield a and 130 subfield 1 are searched for language codes. If multiple language codes are located they are all added to the item's metadata.
  • 260 subfield c is searched for an item date.
  • 010 subfield a is searched for the LCCN.

The item's definitive metadata file, IDENTIFIER_meta.xml is generated from the IDENTIFIER_dc.xml Dublin Core file.

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