MDS Technical Notice
September 25, 2000
Prior to October 15, 2000, all monographic bibliographic records for electronic resources (also known as computer files or machine-readable data files) were distributed in MDS-Computer Files. As a result of the redefinition of "computer file" in Type of Record (Leader/06) in July of 1997, electronic resources should now be coded in Type of Record for the significant content, not based on the carrier alone. Beginning October 15, 2000, bibliographic records for monographic electronic resources will be distributed based on the content of the Type of Record value (Leader/06) as follows:
|Leader/06 Value||MDS Service 1|
|e||Cartographic material 2||Maps|
|f||Manuscript cartographic material 2||Maps|
|g||Projected medium||Visual Materials|
|i||Nonmusical sound recording||Music|
|j||Musical sound recording||Music|
|k||Two-dimensional nonproj. graphic||Visual Materials|
|m||Computer file||Computer Files 3|
|r||Three-dimensional artifact||Visual Materials|
|t||Manuscript language materialt||Books or Manuscripts|
1 Records for serial electronic resources (bibliographic level/leader07 = s) are included in MDS-Serials.
2 Records for cartographic electronic resources have been included in MDS-Maps since Jan. 1998.
3 Records for electronic resources that meet the redefinition of “computer files” in MARC 21 will continue to be distributed in MDS-Computer Files. Updates to records that have already been distributed in MDS-Computer Files will generally continue to remain in that distribution; movement of records from the Computer Files service to another more appropriate service will be dealt with on a case-by-case basis