Wednesday, August 22, 2007

Metadata Object Description Schema Revision

Revisions to MODS.
We have revised the draft of the MODS schema version 3.3, which we had released for review in April. The revision is based on comments from the review of that draft.

Substantive changes to the previous (April 12) version:
  1. Add Xlink attribute to physicalLocation This would allow for a link to the website of the entity in physicalLocation. This is equivalent to MARC 21 852$u, e.g.
    Library of Congress
  2. Add additional enumerated values for authority under : ISO 639-3 and RFC4646. ISO 639-3 is a new standard that codes all individual languages without the criteria for usage that ISO 639-2 has. RFC4646 updates RFC3066, which details how to use language codes in Internet applications. (RFC3066 already defined in MODS). We are planning to add these to the MARC source code list used for field 041$2.
  3. Changes to MODS holdings to be generally consistent with the ISO XML holdings standard, now out for ballot as a Draft International Standard (ISO TC46).
A review of the MODS approach to holdings information is documented.

The new schema and the main MODS site has additional information about MODS 3.3 including the outline of elements and attributes.

We would like to have a 2 week review period. Please send any comments to the MODS list by Sept. 5.

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