Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is an object-relational database management system ^[3] produced and marketed by Oracle Corporation.

Larry Ellison and two friends and former co-workers, Bob Miner and Ed Oates, started a consultancy called Software Development Laboratories (SDL) in 1977. SDL developed the original version of the Oracle software. The name Oraclecomes from the code-name of a CIA-funded project Ellison had worked on while previously employed by Ampex.^[4]