Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
database management system project
|
| gptkbp:constructionStartYear |
1974
|
| gptkbp:demonstrates |
practicality of relational databases
|
| gptkbp:developedBy |
gptkb:IBM
|
| gptkbp:developmentEndYear |
1980
|
| https://www.w3.org/2000/01/rdf-schema#label |
System R project
|
| gptkbp:influenced |
gptkb:Oracle_Database
gptkb:Ingres gptkb:PostgreSQL gptkb:IBM_DB2 |
| gptkbp:keyContribution |
cost-based query optimization
development of SQL language relational data model implementation |
| gptkbp:keyPerson |
gptkb:Donald_D._Chamberlin
gptkb:Raymond_F._Boyce gptkb:Patricia_Selinger |
| gptkbp:location |
gptkb:IBM_San_Jose_Research_Laboratory
|
| gptkbp:notableFor |
introduction of SQL
|
| gptkbp:purpose |
to demonstrate feasibility of relational databases
|
| gptkbp:relatedTo |
gptkb:Edgar_F._Codd
relational database theory |
| gptkbp:bfsParent |
gptkb:M._M._Astrahan
|
| gptkbp:bfsLayer |
8
|