# natural key

> type of unique key in a database formed of attributes that exist and are used in the external world outside the database

**Wikidata**: [Q731314](https://www.wikidata.org/wiki/Q731314)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Natural_key)  
**Source**: https://4ort.xyz/entity/natural-key


## References

1. Freebase Data Dumps. 2013