Edgar F. Codd publishes 'A Relational Model of Data for Large Shared Data Banks'

IBM researcher Edgar F. Codd published his seminal paper, laying the theoretical foundation for relational databases, proposing a structured, mathematical approach to data organization.

Significance

This paper was the intellectual spark for Oracle. It provided the academic blueprint that Larry Ellison, Bob Miner, and Ed Oates would later turn into a commercial reality.