Edgar F. Codd's Relational Model Paper

IBM researcher Edgar F. Codd published 'A Relational Model of Data for Large Shared Data Banks' in Communications of the ACM, outlining the theoretical foundation for relational databases.

Significance

This paper provided the intellectual blueprint that inspired Larry Ellison and his co-founders to create Oracle. It proposed a logical and flexible way to store and retrieve data, overcoming the limitations of previous database models.