Rule 1:
Information Rule
Rule 2:
Guaranteed Access Rule
Rule 3:
Systematic Treatment of NULL Values
Rule 4:
Active Online Catalog
Rule 5:
Comprehensive Data Sub-Language Rule
Rule 6:
View Updating Rule
Rule 7:
High-Level Insert, Update, and Delete Rule
Rule 8:
Physical Data Independence
Rule 9:
Logical Data Independence
Rule 10:
Integrity Independence
Rule 11:
Distribution Independence
Rule
12: Non-Subversion Rule
