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GND Change Service in Marc 21 Format

The purpose of the change service is to keep all users of a copy of the GND up-to-date. It includes

  • New entries
  • Corrections
  • Redirects
  • Divisions
  • Delections

The data records are provided in MARC 21 and MARC21-xml in the weekly GND change service or can be also accessed via the OAI online interfaces in the RDFxml format additional.

The weekly change service contains the latest version of the data records in MARC 21 and MARC21-xml at the time of selection. If the data record has been changed several times within the selection period, only the last version is provided in the weekly change service; earlier changes are no longer identifiable.

Redirects and deletions

Redirects and deletions are initially given as notifications. They can be identified from leader position 5 = "c" and field 682 containing the text "Umlenkung" or "Loeschung".

The data records are then shortened so that they only contain essential information (e.g. identifier and redirect target or deletion notification) and the redirects are carried out in the ILTIS database.

In the following week the shortened data records appear as "real" redirects (leader position 5 = "x") or delections (leader position 5 = "d") in the GND change service. The shortened data records remain in the database for a longer period, at least half a year, meaning that they are also accessible via OAI and SRU for longer.

Division

In the case of division, the leader at position 5 is also "c". Field 682 contains the relevant text depending on the type of division (see table). The information about a division only remains in the data record for one weekly cycle. Once it has been issued within the GND change service, it is deleted in the data record.

Overview of change codes

ChangeMARC 21 leader pos. 5 =Remarks
New or corrected data recordn
Redirect notificationc
and
field 682 ## $i $0 $a $i containing the text "Umlenkung"
Redirectx
and
field 682 ## $i $0 $a $i containing the text "Umlenkung"
Shortened redirect record
Deletion notificationc
and
field 682 ## $i $0 $a $i containing the text "Loeschung"
Manual notification "!!!Gesperrt!!!" at the start of the heading
Deletion

d

and
field 682 ## $i $0 $a $i containing the text "Loeschung"

Shortened deletion record
Divisionc
and
field 682 ## $i $0 $a $i containing the text "Aufspaltung-ohne-Umlenkung"
No automatic redirects in DNB bibliographic data
Division with redirect in DNB bibliographic datac
and
field 682 ## $i $0 $a $i containing the text "Aufspaltung-mit-Umlenkung"
Automatic redirects in DNB bibliographic data
Division for geographic entitiesc
and
field 682 ## $i $0 $a $i containing the text "Aufspaltung-mit-Teilumlenkung"
Automatic redirects in subject cataloguing segment of DNB bibliographic data for geographic entities

Last update: 09.11.2016

Short-URL: http://www.langzeitarchivierung.de/gndchangeservice

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