System R
E295384
System R was an experimental relational database management system developed at IBM in the 1970s that pioneered SQL and proved the practicality of the relational model.
All labels observed (1)
| Label | Occurrences |
|---|---|
| System R canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2752773 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: System R Context triple: [INGRES relational database system, inspiredBy, System R]
-
A.
VM/370
VM/370 is IBM's pioneering virtual machine operating system that allowed multiple independent OS environments to run concurrently on System/370 mainframe hardware.
-
B.
RSX-11
RSX-11 is a family of real-time, multi-user operating systems for PDP-11 minicomputers, widely used in industrial and embedded applications in the 1970s and 1980s.
-
C.
OS/360
OS/360 is IBM's landmark mainframe operating system introduced in the 1960s for the System/360 family, known for pioneering modern concepts in batch processing, multiprogramming, and system software design.
-
D.
IBM System/360
IBM System/360 is a landmark family of mainframe computers introduced in the 1960s that standardized computer architecture and revolutionized business and scientific computing.
-
E.
System M
System M is the analog television broadcasting system used in NTSC countries, characterized by 525 lines per frame and a 60 Hz field rate.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: System R Target entity description: System R was an experimental relational database management system developed at IBM in the 1970s that pioneered SQL and proved the practicality of the relational model.
-
A.
VM/370
VM/370 is IBM's pioneering virtual machine operating system that allowed multiple independent OS environments to run concurrently on System/370 mainframe hardware.
-
B.
RSX-11
RSX-11 is a family of real-time, multi-user operating systems for PDP-11 minicomputers, widely used in industrial and embedded applications in the 1970s and 1980s.
-
C.
OS/360
OS/360 is IBM's landmark mainframe operating system introduced in the 1960s for the System/360 family, known for pioneering modern concepts in batch processing, multiprogramming, and system software design.
-
D.
IBM System/360
IBM System/360 is a landmark family of mainframe computers introduced in the 1960s that standardized computer architecture and revolutionized business and scientific computing.
-
E.
System M
System M is the analog television broadcasting system used in NTSC countries, characterized by 525 lines per frame and a 60 Hz field rate.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
experimental software system
ⓘ
relational database management system ⓘ |
| basedOn | relational model ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| describedIn | "System R: Relational Approach to Database Management" ⓘ |
| developer |
IBM
ⓘ
IBM San Jose Research Laboratory ⓘ |
| developmentPeriod | 1970s ⓘ |
| fieldOfUse |
data management research
ⓘ
database management ⓘ |
| fullName | System Relational ⓘ |
| genre | prototype DBMS ⓘ |
| implementedFeature |
SQL query language
ⓘ
linked to:
SQL
cost-based query optimizer ⓘ embedded SQL ⓘ locking for concurrency control ⓘ system catalog ⓘ transactions ⓘ views ⓘ |
| inception | 1974 ⓘ |
| influenced |
IBM DB2
ⓘ
IBM SQL/DS ⓘ Microsoft SQL Server ⓘ
linked to:
SQL Server
Oracle Database ⓘ PostgreSQL ⓘ Sybase SQL Server ⓘ
linked to:
Sybase
relational database theory and practice ⓘ |
| inspiredBy |
Edgar F. Codd's relational model
ⓘ
linked to:
Edgar F. Codd
|
| keyPerson |
Donald D. Chamberlin
ⓘ
Frank King ⓘ Jim Gray ⓘ Morton Astrahan ⓘ Patricia Selinger ⓘ Raymond F. Boyce ⓘ |
| locationOfDevelopment |
San Jose, California
ⓘ
linked to:
San Jose
|
| mainSubject |
relational database
ⓘ
structured query language ⓘ
linked to:
SQL
|
| notableFor |
influencing commercial relational database systems
ⓘ
pioneering SQL ⓘ proving practicality of the relational model ⓘ |
| operatingSystem |
IBM System/370
ⓘ
MVS ⓘ VM/370 ⓘ |
| programmingLanguage | PL/I ⓘ |
| publicationVenue | ACM Transactions on Database Systems ⓘ |
| researchProjectOf |
IBM Research
ⓘ
linked to:
IBM
|
| status | discontinued ⓘ |
| subsystem |
RDS
ⓘ
RSS ⓘ |
| testDeployment |
Prisma project at Pratt & Whitney
ⓘ
various internal IBM applications ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: System R Description of subject: System R was an experimental relational database management system developed at IBM in the 1970s that pioneered SQL and proved the practicality of the relational model.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.