Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:rulebook
|
| gptkbp:appliesTo |
relational database management systems
|
| gptkbp:hasRule |
Systematic treatment of null values
The guaranteed access rule The information rule |
| https://www.w3.org/2000/01/rdf-schema#label |
Codd's 12 rules
|
| gptkbp:influenced |
SQL database systems
relational database theory |
| gptkbp:numberOfFloors |
12
|
| gptkbp:proposedBy |
gptkb:Edgar_F._Codd
1985 |
| gptkbp:purpose |
define what is required from a database management system for it to be considered relational
|
| gptkbp:rule10 |
Integrity independence
|
| gptkbp:rule11 |
Distribution independence
|
| gptkbp:rule12 |
Non-subversion rule
|
| gptkbp:rule4 |
Dynamic online catalog based on the relational model
|
| gptkbp:rule5 |
Comprehensive data sublanguage rule
|
| gptkbp:rule6 |
View updating rule
|
| gptkbp:rule7 |
High-level insert, update, and delete
|
| gptkbp:rule8 |
Physical data independence
|
| gptkbp:rule9 |
Logical data independence
|
| gptkbp:bfsParent |
gptkb:Edgar_F._Codd
|
| gptkbp:bfsLayer |
5
|