Relational model

Model of data as relations, that is tables of rows with named columns, queried by declarative operations on whole sets; proposed by E.F. Codd and the basis of SQL databases.

created by

• Edgar F. Codd person 1923–2003 [src]

proposed by

• A Relational Model of Data for Large Shared Data Banks writing 1970 [src]

built upon by

• Entity–relationship model concept 1976 [src]
  offered as a unified view of the network, relational and entity-set models

[?] Unconfirmed

• start: Wikidata dates it to Codd's 1969 IBM research report; the published paper is from 1970

Sources

• https://www.wikidata.org/wiki/Q755662
• https://en.wikipedia.org/wiki/Relational_model