The On-Going Debate Between Proponents of the Relational Data Model

Essay

The on-going debate between proponents of the relational data model and proponents of the object-oriented data model (if one truly exists), resembles that between the proponents of network/hierarchic systems and relational systems a couple of decades ago. However, another system is evolving that may have a significant impact on what the database management system of the future may be and that is the Object-Relational Database Management System (ORDBMS).
Give your definition of an ORDBMS. Compare and contrast the ORDBMS and the Object-Oriented Database Management System (OODBMS).