Timeline of RDBMS vs SQL vs Oracle. Edgar F. Codd’s relational model provided the mathematical foundation. Donald D. Chamberlin & Raymond F. Boyce's SQL made it usable and standardized. Larry Ellison, Bob Miner & Ed Oates, Oracle’s founders took this theory and language, commercialized it, and dominated the market. https://www.linkedin.com/feed/update/urn:li:activity:7297841494168674304?utm_source=share&utm_medium=member_desktop&rcm=ACoAAAHUA7sBrzo1SCAyjeql1qiSe9GQS2mmWX4