Codd's 12 Rules for RDBMS
- The Information rule
- The Guaranteed Access rule
- The Systematic Treatment of Null Values rule
- The Dynamic Online Catalog Based on the Relational Model rule
- The Comprehensive Data Sublanguage rule
- The View Updating rule
- The High-level Insert, Update, and Delete rule
- The Physical Data Independence rule
- The Logical Data Independence rule
- The Integrity Independence rule
- The Distribution Independence rule
- The No subversion rule
