Oracle Database is the first database built for corporate grid computing, the most versatile and cost-effective method of managing data and applications. An RDBMS is Oracle Database. An object-relational database management system is an RDBMS that incorporates object-oriented features including user-defined types, inheritance, and polymorphism (ORDBMS). There are logical and physical structures in the database. Because the physical and logical structures are distinct, physical data storage may be controlled without influencing logical storage structure access.