How can Object Oriented Design help the Migration from Relational to Object Oriented database architecture ?

Position Paper: How can Object Oriented Design help the Migration from Relational to Object Oriented database architecture ?
Introduction
Object Oriented Databases Management Systems (OODBMSs) add database functionality to object programming languages. They bring much more than consistently storing programming language objects. OODBMSs extend the principals of object programming languages to provide full database programming capability, while keeping the original language compatibility. The best benefit of this approach is the unification of the application and database development. As a result, applications require less code, use more natural data modelling and code is easier to maintain. Object developers can write complete database applications with a small amount of additional effort.
In contrast to a Relational DBMS where a complex data structure must be flattened out to fit into tables or joined together from those tables to form the structure, OODBMSs have no performance ove...