The proposed foundation represents an evolutionary step, not a revolutionary one; it builds on Codd's relational model of data. It also incorporates a comprehensive specification for a method of defining data types, including a comprehensive model of type inheritance, thus, it also builds on research in the field of object orientation. With a strong footing in both areas of the object/relational divide, the Manifesto is offered as a firm foundation for the DBMSs of the future.
Prof. Ashay Dharwadker