4. The method of claim 1 , wherein each logical link defines a path between different data structures of a relational representation of the physical data in the database.
4. The method of claim 1 , wherein each logical link defines a path between different data structures of a relational representation of the physical data in the database. 5. The method of claim 4 , wherein each logical link defines a path between different data structures of a relational representation of the physical data in the database.