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--- resources:cerl_thesaurus:editing:format:831 [2016/06/09 11:52] – [Application of Content Designators] liventsova
+++ resources:cerl_thesaurus:editing:format:831 [2020/01/22 18:46] – [Examples] jahnke
@@ Line 1: / Line 1: @@
-====== 831 Duplicate control field ======
+====== 831 Duplicate control field (O;R) ======
-==== Do not edit this field manually! ====
-\\
-<block tableinvisible>
-|  **Mandatory:** |-|
-|  **Repeatable:**|-|
-|  **Related fields:** |[[801|801]]|
-</block>
-\\
 ==== Field Definition and Scope ====
-This field is used for database updating purposes only. It shall not be displayed in the WWW interface, nor shall its content be edited by a cataloguer. It is entirely created only by programme and will be deleted by the database system after the indicated action has taken place.
+This field is used for database updating purposes only. It shall not be displayed in the WWW interface, nor shall its content be edited by a cataloguer.
@@ Line 34: / Line 22: @@
 === Subfields ===
-**$8 Language code (O;NR)**\\
-Mandatory to precede the $n subfield. A three letter language code from the Marc Code List for Languages.
 **$a Record Identifier (M;NR)**\\
 Record ID of the record considered duplicate
-**$b Number of matches (A;NR)**\\
+==== Input Conventions ====
-Number of identical forms or other data detected by a checking routine.
-The number of matches should be understood as an indication of the similarity of the two records.
-**$n Cataloguer's note (O;NR)**\\
-A short description of the duplicate checking which took place.
-**$z Original Authority File (A;NR)**\\
-Indicates the Authority File from which the record was taken originally.
-==== Input Conventions ====
+==== Examples ====
+  - 831 #1$acnp00081480
+==== Internal Representation ====
+<code javascript>
+{"meta": {
+    "distinctFrom": ["Record ID ($a)"],
+    "sameAs": ["Record ID ($a)"],
+    "possibleMatch": [{
+        "id": "Record ID ($a)",
+        "similarity": "Similarity ($b)"
+    }]
+}}
+</code>
-==== Examples ====
+==== Change History ====
+  * //17.07.2017//: Subfields $8, $n and $z are no longer supported, once the CT has been migrated into its new environment
-  - 831 #1$acnp00081480$b1$zNeNKHB$8ger$nDatensatz möglicherweise dublett (Übereinstimmung in Namensform).

resources/cerl_thesaurus/editing/format/831.txt · Last modified: 2020/01/22 18:49 by jahnke