# Codd's 12 rules

> Relational database design

**Wikidata**: [Q1137579](https://www.wikidata.org/wiki/Q1137579)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Codd's_12_rules)  
**Source**: https://4ort.xyz/entity/codd-s-12-rules


## References

1. Freebase Data Dumps. 2013
2. Quora