Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:logic
query language |
| gptkbp:basedOn |
predicate calculus
|
| gptkbp:contrastsWith |
procedural query languages
|
| gptkbp:firstAppearance |
1970s
|
| gptkbp:focusesOn |
what to retrieve
|
| gptkbp:hasType |
gptkb:domain_relational_calculus
tuple relational calculus |
| https://www.w3.org/2000/01/rdf-schema#label |
relational calculus
|
| gptkbp:influenced |
SQL
|
| gptkbp:introduced |
gptkb:Edgar_F._Codd
|
| gptkbp:isNonProcedural |
true
|
| gptkbp:relatedTo |
relational algebra
|
| gptkbp:usedFor |
specifying database queries
|
| gptkbp:usedIn |
relational databases
|
| gptkbp:bfsParent |
gptkb:E._F._Codd
gptkb:Edgar_Frank_Codd gptkb:George_Codd gptkb:Structured_Query_Language gptkb:System_R_database_system gptkb:Edward_Codd |
| gptkbp:bfsLayer |
7
|