====== 001 Record identifier (M;NR) ======




==== Field Definition and Scope ====

The CERL thesaurus record identification number is a unique identifier. The identifier consists of a three letter prefix, indicating the type of entity described and a 8 digit number.


==== Application of Content Designators ====
This field does not have indicators or subfields.


==== Input Conventions ====
Currently, the following prefixes are used:

|cni|CERL nomen imprimatoris etc. (Printers, Publishers, Booksellers etc.)|
|cnc|CERL nomen corporationis (Corporate bodies)|
|cnl|CERL nomen loci (Places)|
|cnp|CERL nomen personae (Persons)|

==== Mapping ====

==== Example ====

  -  001 cnl00000719

==== Internal Representation =====
<code javascript>
{"_id": "Record identifier (001)"}
</code>

==== Change History ====

  * //15.01.2020:// Removed 'caf' from the list of prefixes, since it is not used any more in the current CERL Thesaurus. The caf records from the previous version of the Thesaurus will eventually go into a separate database.