Contemporary database management systems, in restricting themselves to rigid fixed structural representations of the data and their associations, suffer from problems primarily concerning user effectiveness. Recent developments of effectiveness-oriented systems avoid this problem but the approach adopted results in considerable loss of efficiency. By integrating these two approaches in a dynamically controlled structural environment paralleling that of an Entity-Relationship model of the data resource, the two important areas of efficiency and effectiveness are not compromised. Furthermore, additional problems relating to more technical matters such as query optimization no longer arise and apparently conflicting viewpoints on database systems can now be rectified (e.g. the Network and Relational models are special cases of this proposed model). Important analogies in related fields of interest such as distributed databases, knowledge representation and cognitive psychology can lead to new advances and insights into the applicability of this model.